#Astronomy

#Astronomy

'Inside it, you have the part of the galaxy that is still actively building itself with ongoing star formation. Outside it, you have a disc region populated almost entirely by stars that have drifted there from elsewhere.'

The new images of the Sombrero Galaxy, captured by the 570-megapixel Dark Energy Camera, reveal its bright core amid 2,000 globular star clusters tightly bound by gravity.

The precise expansion rate of the universe - called the Hubble constant - has turned into a major pain point as attempts to nail it down keep leading to widely differing figures.

The lantern slides are transparent photographs or paintings on glass plates designed to be projected onto a screen using an early slide projector. They were sitting in three plastic tubs in a Fuertes office.

The square structure, topped with a telescope dome, was built for the 1769 Transit of Venus - an event that also saw Captain James Cook dispatched across the globe to secure a clearer view.

The atmosphere of TOI 5205b has a lower concentration of heavy elements relative to hydrogen than gas giants in our own solar system, suggesting something different about its formation.

MoonFest draws inspiration from John Draper, who made history in 1840 by capturing one of the earliest photographs of the moon, bridging the gap between Earth and our celestial neighbor.

A lunar eclipse occurs when the Earth lines up between the moon and the sun. The sun's light is blocked casting a shadow on to the moon. But in some eclipses sunlight does reach the moon indirectly, daubing the moon in a sunset palette. Any light that does pass shines through our atmosphere and transforms the lunar surface into a deep, coppery red.

In the days leading up to the winter solstice, amber streetlights switch on ever earlier as dusk falls over Flagstaff, Ariz., casting the city in a soft, warm hue. Longer nights mean even more time to spend under hundreds of stars and the cloudy swath of the Milky Way galaxy, which are visible even from the city's downtown. Spectacular views of the night sky are a given for the more than 77,000 residents of the world's first and largest dark sky city,

If there is one thing we can rely on in this world, it is human hubris, and space and astronomy are no exception. The ancients believed that everything revolved around Earth. In the 16th century, Copernicus and his peers overturned that view with the heliocentric model. Since then, telescopes and spacecraft have revealed just how insignificant we are. There are hundreds of billions of stars in our galaxy, the Milky Way, each star a sun

This December, like every December, will include a single moment - often marked by a particular day, which is December 21st here in 2025 - where our planet's axial tilt is perfectly aligned with the invisible line connecting the Earth to the Sun. In December, it's the northern hemisphere's pole that's tilted away from the Sun, while the southern hemisphere's pole is tipped towards it; in June, the opposite situation is true.

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