Scientists close to solving mystery of how universe's giant galaxies formedGalaxies merging billions of years ago led to the birth of the universe's largest galaxies through intense star formation.
Dark energy: mysterious cosmic force appears to be weakening, say scientistsDark energy may be weakening, challenging current theories about the universe's fate.
Scientists close to solving mystery of how universe's giant galaxies formedGalaxies merging billions of years ago led to the birth of the universe's largest galaxies through intense star formation.
Dark energy: mysterious cosmic force appears to be weakening, say scientistsDark energy may be weakening, challenging current theories about the universe's fate.