#astronomy
#astronomy

Light pollution is a risk factor for various illnesses: We're facing a global threat'

Light pollution is a growing environmental problem impacting visibility of the night sky. [ more ]

time.com

1 day ago

The Eta Aquarids Meteor Shower Is Coming. Here's How You Can See It

The Eta Aquarids meteor shower peaks this weekend, offering a vibrant display of hundreds of meteors in the pre-dawn hours. [ more ]

Sacramento Bee

1 day ago

Major meteor shower to peak in California sky. Here's when - and how to catch a glimpse

The Eta Aquarids Meteor Shower, originating from Halley's Comet debris, peaks on May 5 and can be best viewed on Sunday and Monday mornings before dawn in California. [ more ]

www.nytimes.com

2 days ago

Watch the Eta Aquarid Meteor Shower Reach Its Peak

Meteor showers are a spectacular astronomical event that occur annually and originate from cometary debris, visible during peak times in specific constellations. [ more ]

Mail Online

3 days ago

See shooting stars flying across the night sky this weekend.

The Eta Aquarid meteor shower will peak on May 4 and May 5, offering up to 50 shooting stars per hour. [ more ]

Ars Technica

Daily Telescope: The Horsehead Nebula as we've never seen it before

The James Webb Space Telescope captured a detailed infrared image of the Horsehead Nebula, showcasing its intricate beauty and highlighting distant galaxies. [ more ]

Defector

4 days ago

The Closer We Look The Smaller We Get | Defector

The vastness of the universe can make it hard to comprehend, but capturing known objects on a cosmic scale helps bridge the gap for human understanding. [ more ]

Boston.com

4 days ago

A horse-shaped nebula gets its close-up in new photos by NASA's Webb telescope

The Webb Space Telescope has provided detailed images of the Horsehead Nebula, enhancing astronomers' understanding of this fascinating cosmic feature. [ more ]

Mail Online

NASA's James Webb captures 'sharpest' images yet of Horsehead Nebula

NASA's James Webb Space Telescope captured detailed images of Horsehead Nebula's 'mane', showcasing its complexity and spatial resolution. [ more ]

morehorsehead-nebula

Mail Online

4 days ago

Asteroid hunters spot 27,500 'hidden' space rocks, some close to Earth

Collaboration between astronomers, data scientists, and Google helped discover 27,500 new asteroids, enhancing planetary defense efforts. [ more ]

Cornell Chronicle

Novel calculations peg age of 'baby' asteroid | Cornell Chronicle

Asteroid 'Lucy's baby' estimated to be 2-3 million years old, determining age using statistical calculations. [ more ]

Mail Online

A leading theory why aliens have not contacted Earth may surprise you

A single gamma-ray burst could potentially sterilize 10% of the galaxy. [ more ]

Futurism

Sun Blasts Comet, Breaking Off Its Tail

New footage from NASA captures a comet's tail being broken off by a solar eruption, showcasing the power of the Sun. [ more ]

Kqed

'Perfect Day' for a (Partial) Eclipse: Here's What the Bay Area Saw | KQED

The Bay Area experienced a partial solar eclipse, missing the path of totality but still witnessing the moon partially covering the sun.

The 2024 total solar eclipse was the longest and most visible for the U.S. in a century, drawing many spectators to various watch parties. [ more ]

www.scientificamerican.com

Here's Where You Can Watch the Total Solar Eclipse

Livestreams will be available for the 2024 total solar eclipse for those outside the path of totality

Scientific American will provide a unique view of the eclipse using high-flying telescopes on NASA jets [ more ]

www.scientificamerican.com

NASA Wants to Shut Down Its Greatest X-ray Observatoryand Astronomers Aren't Happy

Chandra X-ray Observatory facing possible end due to budget constraints

Astronomers launch Save Chandra campaign to extend telescope's life [ more ]

Inverse

Inside the Quest To Darken Chile's Atacama Desert Skies

The new National Lighting Standard in Chile aims to protect the night sky for astronomy, biodiversity, and human health. [ more ]

www.theguardian.com

Is it aliens?': how a mysterious star could help the search for extraterrestrial life

Boyajian's star, with its erratic behavior, is being studied for potential insights into finding intelligent life on other worlds. [ more ]

Inverse

Inside the Quest to Confirm A Strange 60-Year-Old Theory About Stonehenge

Stonehenge's solar and lunar alignments are significant, attracting crowds during major celestial events. [ more ]

Futurism

Scientists Say Something Seems to Have Broken Off the Moon at This Crater

One near-Earth asteroid, Kamo'oalewa, is believed to have originated from the Moon's Giordano Bruno crater, linking it to lunar material and suggesting more such asteroids exist. [ more ]

www.npr.org

Never seen an exploding star? This year, you'll have your chance

A rare opportunity in 2022 to witness the explosion of the T Coronae Borealis star system in the Milky Way, akin to a once-in-a-lifetime event. [ more ]

www.scientificamerican.com

What Were the Red Dots around the Total Solar Eclipse?

Skywatchers saw red prominences during the total solar eclipse on April 8, 2024.

A total solar eclipse offers a rare opportunity to observe the sun's corona and prominences. [ more ]

www.space.com

This Hellish Alien World's Skies May Create an Eerie Rainbow Glory' Effect

WASP-76b, an ultra-hot Jupiter exoplanet outside our solar system, reveals a rainbow-like effect known as 'glory' in its atmosphere.

Observation of 'glory' on WASP-76b provides unique insights into the extreme conditions and atmospheric dynamics of exoplanets. [ more ]

www.scientificamerican.com

The Milky Way Illuminated Ancient Egypt's Goddess of the Sky

The Milky Way fascinated ancient civilizations, like the Egyptians, associating it with deities and spirits.

Ancient Egyptians incorporated astronomical observations into religion and mythology, including the personification of celestial objects like the sun. [ more ]

Inverse

Discovery of Record-Size Black Hole Could Transform Our Grasp of Space-Time Ripples

The largest-known black hole, BH3, 2,000 light-years away, is 33 times more massive than the Sun and the most massive stellar black hole in the Milky Way [ more ]

Mail Online

Scientists discover a huge black hole in our galaxy

The newly discovered black hole Gaia BH3 in our galaxy is the second-closest known to Earth but poses no immediate danger. [ more ]

The New Yorker

Black Holes Are Even Weirder Than You Imagined

Understanding black holes is awe-inspiring for scientists due to the complex nature and extreme behaviors involved.

Recent discoveries, such as the observation of the oldest black hole and interactions between supermassive black holes, showcase the increasing knowledge in this field. [ more ]

Futurism

Scientists Capture Amazing Image of Black Hole at Center of Our Galaxy

The team captured an image of Sagittarius A* using the Event Horizon Telescope, showing magnetic fields

The image suggests similarities between Sagittarius A* and the black hole in the M87 galaxy, including the presence of strong, organized magnetic fields [ more ]

Ars Technica

Astronomers have solved the mystery of why this black hole has the hiccups

Astronomers observed a burst of light from a galaxy with a supermassive black hole, showing periodic energy dips every 8.5 days.

The unusual behavior was caused by a smaller black hole orbiting the supermassive black hole, punching through its accretion disk and releasing gas. [ more ]

black-hole

www.theguardian.com

Astronomers discover Milky Way's biggest stellar black hole 33 times size of sun

BH3 is the most massive stellar black hole in the Milky Way, formed from an exploding star 2,000 light-years away. [ more ]

Inverse

Inside a Revolutionary Experiment to Map Space-Time

The first-ever image of a black hole provided strong evidence of their existence and matched theoretical predictions.

Astronomers are collaborating to create the first-ever movie of a black hole by capturing snapshots over time. [ more ]

time.com

Astronomers Find What May Be the Universe's Brightest Object With a Black Hole Devouring a Sun a Day

The brightest quasar in the universe discovered, 500 trillion times brighter than the sun, black hole 17 billion times more massive than the sun. [ more ]

www.space.com

The Brightest Quasar Ever Seen Eats a 'Sun' Every Day

J0529-4351 is the brightest and most luminous quasar ever discovered, with a supermassive black hole consuming the equivalent of one sun's mass per day.

The newly discovered quasar is located so far from Earth that its light has taken 12 billion years to reach us, providing a glimpse of the universe at just under 2 billion years old. [ more ]

www.npr.org

Scientists have found a black hole so large it eats the equivalent of one sun per day

Discovery of the fastest-growing black hole ever recorded

Black holes form bright objects called quasars. [ more ]

moreblack-hole

www.scientificamerican.com

Where Is Planet Nine? Its Hiding Places Are Running Out

Astronomers have narrowed down possible locations for Planet Nine but have not found conclusive evidence of its existence yet. [ more ]

www.scientificamerican.com

Tides Move Heaven and Earth More Than You Know

Tides are not just the ebb and flow of the ocean but a force causing water movement, linked to gravity, affecting various celestial bodies. [ more ]

www.scientificamerican.com

A Solar Eclipse Is Too Special to See Through Your Smartphone

Total solar eclipse on April 8, 2024, expected to cover U.S., Mexico, and Canada.

Articles explaining why, where, what to expect, how to participate, and watch safely are available.

Emotional experiences during a total solar eclipse are described vividly by observers. [ more ]

theconversation.com

To Ancient Maya, Solar Eclipses Signified Clashing Gods

Travel to a Dark Sky area to appreciate the beauty of celestial objects in the night sky.

Pre-modern societies accurately predicted lunar and solar eclipses, viewing the sky as orderly and cyclical. [ more ]

www.scientificamerican.com

Stunning Comet Could Photobomb This April's Total Solar Eclipse

Comet 12P/Pons-Brooks may photobomb the total solar eclipse on April 8, 2024.

Comet 12P is one of the brightest comets in history, making its closest approach to the sun on April 21, less than two weeks after the eclipse. [ more ]

Futurism

Data science

Top Astronomers Gather to Confront Possibility They Were Very Wrong About the Universe

Astronomers question fundamental aspects of universe's understanding, including the theory of constant rate of expansion formulated in 1922. [ more ]

celestial-events

time.com

Missed Out or Want More? Here Are the Next Solar Eclipses to Look Out For

Solar eclipses occur every year or two and can be witnessed across the globe.

The next total solar eclipse in 2026 will pass over Greenland, Iceland, and Spain, while future events will touch areas like Alaska, Russia, Greenland, and western Canada. [ more ]

Los Angeles Times

Los Angeles

A solar eclipse is happening today in California. How to get the best view

Millions in the U.S. will witness a total solar eclipse, with California experiencing a partial one.

Partial solar eclipse allows observation of Earth, sun, and moon in unique interaction. [ more ]

Washington Post

The cosmic truth that gets revealed during a total solar eclipse

Totality of a solar eclipse is a unique and awe-inspiring phenomenon, distinct from a partial eclipse.

Observing a total solar eclipse offers a supernatural experience with sudden darkness, temperature drop, and celestial alignments. [ more ]

Washington Post

See what the solar eclipse will look like in your city

April 8, 2024, presents a rare opportunity to witness a total solar eclipse in North America.

The experience of a total solar eclipse includes a darkened sky, drop in temperature, and visibility of the sun's corona. [ more ]

www.npr.org

The 'devil comet' is visible in the night sky, and is sticking around for the eclipse

The comet 12P/Pons-Brooks can be seen from Earth coinciding with a total solar eclipse.

The comet is known for colorful flare-ups and a horseshoe-shape, earning the nickname 'devil comet'. [ more ]

www.scientificamerican.com

Total Solar Eclipses Are Cosmic Coincidences That Won't Last Forever

Total solar eclipses are astronomically rare and rely on the unique relationship between Earth and the moon.

The dramatic effect of total solar eclipses is due to the precise proportions of the sun and moon and their distance from Earth. [ more ]

morecelestial-events

time.com

Here Are the Five Stages of Today's Total Solar Eclipse

Millions expected to watch last total solar eclipse until 2044 in 15 U.S. states.

Solar eclipse will have five major stages, each with unique phenomena for stargazers to observe. [ more ]

Sacramento Bee

California

What time is the solar eclipse? How do I keep my eyes safe? Your Sacramento guide

A partial solar eclipse will be visible in Sacramento on Monday, reaching about 35% coverage of the sun.

The eclipse is expected to start around 10:30 a.m., peak around 11:15 a.m., and end around 12:15 p.m. [ more ]

Sacramento Bee

California

When is the first day of spring? California is about to welcome the equinox

The spring equinox marks the beginning of spring in the Northern Hemisphere.

California experiences longer days and shorter nights as spring officially starts. [ more ]

www.nytimes.com

New York City

Here Comes the Solar Eclipse

Residents of New York witnessed a solar eclipse on Jan. 24, 1925, that won't be seen again for 99 years.

After 99 years, New York is once again in line for a total eclipse, with the moon positioning between the city and the sun. [ more ]

www.scientificamerican.com

The Solar Eclipse Is Almost Here: Everything You Need to Know

The total solar eclipse on April 8, 2024, will create a dramatic and awe-inspiring sight with features like the corona and prominences.

Even those not in the path of totality can witness a partial eclipse, which will still be a captivating event across the U.S. [ more ]

time.com

When to Watch the Solar Eclipse in Los Angeles

Los Angeles will experience a noticeable partial solar eclipse starting at 10:06 a.m., peaking at 11:12 a.m.

Various events like sound baths, meditation workshops, live online broadcasts, viewing parties, and educational activities are planned around the eclipse in Los Angeles. [ more ]

time.com

When to Watch the Solar Eclipse in Chicago

Chicago residents can witness a partial eclipse on April 6, 2024, with peak totality around 94% at 2:07 p.m.

Adler Planetarium and other venues offer free or ticketed events for eclipse viewing, including live streams and viewing parties. [ more ]

english.elpais.com

Interstellar interlopers like Oumuamua and Borisov are much more common than previously thought

The first interstellar interloper detected in the solar system, 1I/'Oumuamua, was not gravitationally bound to the Sun, setting it apart from typical celestial bodies.

Discovery of 2I/Borisov, following 1I/'Oumuamua, implies interstellar objects may be more common than previously thought, with estimates suggesting thousands within Neptune's orbit. [ more ]

www.scientificamerican.com

The Victorian Woman Who Chased Eclipses

Annie Maunder's determination to photograph and study total solar eclipses contributed to a greater understanding of the sun's effects on Earth.

Despite her significant contributions to science, Annie Maunder, like many early female scientists, has been forgotten and overlooked. [ more ]

Washington Post

How the solar eclipse is bringing cutting-edge science to small towns

High school students in small town Kemp, Tex., participate in a NASA-funded project to capture solar corona images during the eclipse.

The 2024 eclipse will be a significant event with totality over major American cities, providing a unique experience to millions. [ more ]

Nature

Coronavirus

Total solar eclipse 2024: how it will help scientists to study the Sun

The total solar eclipse on April 8 will allow researchers in North America to observe the Sun's corona during a period of extreme solar activity.

The mystery of the Sun's corona being hotter than its surface and the intricate structures within it continues to puzzle scientists. [ more ]

Mail Online

UK news

The 9 UK and Ireland towns and cities where you'll see solar eclipse

People in the UK and Ireland will have a chance to see a partial solar eclipse on April 8, 2024, just before sunset.

The eclipse will create a 'ring of fire' effect for viewers directly in the path of the shadow, while others in the UK and Ireland will see a partial coverage of the sun. [ more ]

www.npr.org

How to make the most of next week's solar eclipse : Short Wave

Total solar eclipse will occur on April 8, 2024, visible from Texas to Maine.

Eye protection is crucial for safe viewing of any solar eclipse. [ more ]

www.scientificamerican.com

Do Stars Outnumber the Sands of Earth's Beaches?

There are more stars in the universe than grains of sand on all Earth's beaches, an unfathomable concept.

Estimating the exact number of stars in the universe versus grains of sand on Earth is a complex and approximate 'Fermi problem.' [ more ]

Mail Online

New image of supermassive black hailed 'milestone in astronomy'

Scientists captured an image of Sagittarius A* revealing strong magnetic fields.

The image uses polarized light to show twisting magnetic fields around the black hole. [ more ]

www.scientificamerican.com

This Dead Star Flares to Life Every 80 Years. Your Only Chance to See It Will Come Any Day Now

T CrB is a periodic nova erupting every century or so, visible to the naked eye during outbursts.

Astronomers are eager to study T CrB's unique behavior of brightening and dimming, which defies conventional wisdom about novae. [ more ]

www.theguardian.com

Northern lights predicted across US and UK on Monday night in wake of solar storms

Solar eruptions causing auroras in both hemispheres

Auroras potentially visible in US and UK on Monday night [ more ]

WIRED

How to View April's Total Solar Eclipse, Online and In Person

Solar eclipse in North America soon after almost a decade, not expected until 2044.

Solar eclipse is an alignment of sun, moon, and Earth; moon covers sun leading to totality or partial eclipse. [ more ]

www.theguardian.com

Planet-eating stars more common than previously thought, astrophysicists find

Planet-eating stars are more common than previously thought

Astronomers studied co-natal stars to detect planetary ingestion [ more ]

Inverse

The First Full Moon of Spring Will Appear this Weekend With A Hidden Surprise

The first full Moon of spring on March 24 comes with a partial lunar eclipse.

The partial lunar eclipse on March 24 will be a slight dimming, unlike a full solar eclipse. [ more ]

Mail Online

Scientists create the largest chart of active supermassive black holes

Supermassive black holes are concentrated masses in the centers of galaxies, with the 3D map revealing 1.3 million of them.

The map, created with data from the Gaia spacecraft, shows quasars - active supermassive black holes feeding on material, emitting bright radiation. [ more ]

www.scientificamerican.com

Orion's Twin Rogue Planets Inexplicably Blaze with Intense Radio Waves

Free-floating Jupiter-size planets in Orion Nebula challenge traditional planet formation theories.

Radio signals detected from JuMBO24 suggest it may have formed alone rather than being ejected from a star system. [ more ]

www.scientificamerican.com

Astronomers Are Snapping Baby Pictures of Planets by the Dozen

Advancements in technology and observational capabilities have significantly improved our understanding of planet formation.

Astronomers have recently observed 86 nascent planetary families, providing a wealth of new data for analysis. [ more ]

Ars Technica

Daily Telescope: Gigantic new stars stir up a nebula

Researchers study Nebula NGC 604 in Triangulum Galaxy with 200 massive stars.

Image taken by James Webb Space Telescope shows red tendrils, ionized hydrogen, and carbon-based molecules. [ more ]

Futurism

Scientists Intrigued by Water Planet Where Ocean Appears to Be Boiling

The planet TOI-270 d may be covered entirely with a hot sea resembling boiling water.

Interpretations vary, with some suggesting a rocky surface with a dense, steamy atmosphere. [ more ]

BKReader

Brooklyn

View the Partial Solar Eclipse at the Green-Wood Cemetery

Opportunity to witness last partial solar eclipse until 2044 at Green-Wood Cemetery

Free event with activities and eclipse-watching through telescopes [ more ]

Inverse

"Something doesn't add up": The Webb Telescope Identified Premature Supermassive Back Holes

Baby quasars discovered in distant universe are precursors to supermassive black holes.

Astronomers used James Webb Space Telescope to identify small galaxies with actively-feeding supermassive black holes. [ more ]

www.theguardian.com

Astronomers detect waterworld with a boiling ocean' in deep space

Astronomers observed an exoplanet with potential deep water ocean, advancing habitable conditions search.

James Webb telescope showcased insights into distant planet's atmosphere and chemical signatures unraveling habitability possibilities. [ more ]

www.npr.org

For April's eclipse, the disparity between 'meh' and 'OMG' may be driving across town

Partial eclipses are not as dramatic as total eclipses.

It is essential to be in the path of totality to witness the full experience of a total solar eclipse. [ more ]

www.nature.com

Two Giant U.S. Telescopes Are Threatened by Federal Funding Cap

US astronomers may end up with only one large ground-based telescope due to funding concerns.

The National Science Board recommended capping NSF's contributions for giant telescopes, possibly leaving only one project funded. [ more ]

Mail Online

Astronomers may have just spotted one of the universe's first galaxies

Galaxy GN-z11 formed in early universe

James Webb Space Telescope observed ancient galaxy GN-z11 [ more ]

Mail Online

Graphic reveals the gruesome fate of every planet when the Sun dies

The Sun will expand into a red giant in 5 billion years.

Earth might avoid being consumed during the Sun's red giant phase. [ more ]

Inverse

ALMA Telescope Detects "At Least 3 Times" More Water Than On Earth In A Nearby Protoplanetary Disk

Astronomers detected water in a disk 450 light-years away where baby planets are forming.

The amount of water observed is three times more than all of Earth's oceans, influencing planet formation. [ more ]

Inverse

Hubble Spots A Community Of Extremely Old Stars That Have Aced Longevity

Globular clusters are communities of stars formed at the same time and place, providing insights into early star formation.

Hubble Space Telescope's clarity of vision from its orbital altitude allows for detailed observations of individual stars in objects like NGC 1841. [ more ]

Futurism

James Webb Spots "Extremely Red" Black Hole

JWST spotted an extremely red supermassive black hole in a distant location.

The black hole's uniqueness challenges existing understanding of how such entities grow relative to host galaxies. [ more ]

Futurism

Dead Star Has Visible Scar After Devouring Chunk of Planet

White dwarf WD 0816-310 shows a metal scar from devouring a nearby planet.

The scar's formation is linked to the star's magnetic field, a first-time observation. [ more ]

Futurism

Scientists Scanning Beautiful Star System for Signs of Alien Tech

HD 110067 is a mathematically perfect star system with six exoplanets in a rare harmony.

Scientists are exploring the possibility of alien technology in or around the star system. [ more ]

Ars Technica

Daily Telescope: Finally, we've found the core of a famous supernova

SN 1987A, the first observable supernova, still a topic of study

James Webb Space Telescope finds emission lines from a newly born neutron star [ more ]

Mail Online

NASA's James Webb spots Milk Way-like galaxy that shouldn't exist

Astronomers discovered a galaxy larger and older than the Milky Way, challenging current theories on galaxy formation.

The galaxy ZF-UDS-7329 raises questions about the role of dark matter in early galaxy formation. [ more ]

www.theguardian.com

Astronomers spot white dwarf star with metallic scar'

White dwarf star WD 0816-310 has a dark metallic scar from an ingested planetary fragment.

Planetary material observed on white dwarf is held in place by the star's magnetic field. [ more ]

The New Yorker

What a Major Solar Storm Could Do to Our Planet

Disturbances on the sun can severely impact power grid and communication systems.

Preparedness for solar storms is crucial for mitigating potential damage. [ more ]

Mail Online

Uranus and Neptune have secret MOONS

New moons discovered around Neptune and Uranus point to ongoing celestial discoveries.

Ground-based telescopes reveal faintest moons around ice giant planets, indicating technological advancements in space exploration. [ more ]

Mail Online

Full Snow Moon will light up skies tonight - best time to see it

The Snow Moon is the last full moon in February and a wintery treat in the skies.

The full moon will be bright and visible, no special equipment needed for viewing. [ more ]

www.scientificamerican.com

JWST Solves Decades-Old Mystery of Nearby Supernova

Supernova 1987A was the closest exploding star event observed in the past four centuries.

The James Webb Space Telescope helped scientists confirm the existence of a dense neutron star in place of a black hole. [ more ]

www.scientificamerican.com

Why Do We Have a Leap Year Anyway?

Leap day occurs every four years on February 29, adding a day to the calendar.

The concept of timekeeping is based on the Earth's movement and orbit around the sun, which involves the day and the year. [ more ]

Futurism

Galactic Wave May Have Crossed Paths With Earth, Scientists Find

Oscillating nature of Radcliffe Wave

Influence of Gaia project in understanding cosmic structures [ more ]

www.independent.co.uk

Astronomers find strong evidence of neutron star in remnant of exploding star

Neutron star at center of Supernova 1987A confirmed after 30-year mystery.

Detection of ionized argon and sulfur atoms near explosion site implies presence of bright radiation from neutron star. [ more ]

Mail Online

An asteroid the size of a BUS will skim past Earth today

Asteroid 2024 DW is the size of a bus and will pass by Earth at a distance closer than the moon.

Despite its speed and proximity, the asteroid is not expected to pose a threat to Earth. [ more ]

Inverse

The NASA Mission that Photographed Pluto in 2015 Has Discovered Something Unexpected

The Kuiper Belt may be larger than expected due to high levels of dust discovered by New Horizons spacecraft.

Evidence suggests the presence of Kuiper Belt Objects beyond the traditional edge and a possible second belt. [ more ]

Yanko Design - Modern Industrial Design News

Web design

Adorable Little Planet Push-Pins Will Bring A Bit Of Outer Space To Your Boring Old Desk - Yanko Design

Adding cute stationery designs to your desk can boost mood and productivity.

Planet Pins by Duncan Shotton are colorful hand-painted pins inspired by the solar system. [ more ]

Futurism

Scientists Befuddled by Impossible Galaxy Seen by James Webb

Galaxy formation challenges models

Dark matter influence questioned [ more ]

www.scientificamerican.com