Cosmology
- Cosmology
What detecting gravitational waves means for the expansion of the universe
The latest LIGO signal proves that gravitational waves travel at the speed of light, ruling out a swath of cosmological theories in the process.
- Astronomy
How to make the cosmic web give up the matter it’s hiding
Half the ordinary matter in the universe is unaccounted for. Astronomers may now have a new way to see it spanning the space between galaxies.
- Cosmology
Map reveals the invisible universe of dark matter
The Dark Energy Survey reports a new tally of the dark universe.
- Astronomy
The most distant star ever spotted is 9 billion light-years away
A bright blue star sends its light from two-thirds of the way across the universe, thanks to a chance alignment with a galaxy cluster.
- Astronomy
Astronomers get glimpse of star 9 billion light-years away
A bright blue star sends its light from two-thirds of the way across the universe, thanks to a chance alignment with a galaxy cluster.
- Astronomy
Satellite trio will hunt gravitational waves from space
The European Space Agency has green-lighted the Laser Interferometer Space Antenna, expected to launch in 2034.
- Cosmology
Milky Way’s loner status is upheld
Galaxy surveys show the Milky Way lives in a vast cosmic void, which could help ease tensions between ways of measuring how fast the universe is expanding.
- Science & Society
Einstein’s latest anniversary marks the birth of modern cosmology
A century ago, Einstein gave birth to modern cosmology by using his general theory of relativity to describe the universe.
- Astronomy
Distant galaxies lack dark matter, study suggests
Slower-than-expected velocities of stars in distant galaxies, if confirmed, could reshape astronomers’ ideas of galaxy formation and evolution.
- Astronomy
Astronomers detect oldest known stardust in distant galaxy
The first stardust ever generated in the universe may have been spotted in a distant galaxy, seen as it was 600 million years after the Big Bang.
- Astronomy
Faint, distant galaxies may have driven early universe makeover
Gravitational lensing has revealed extremely faint galaxies in the early universe, suggesting these tiny galaxies were responsible for cosmic reionization.
- Cosmology
New data fuel debate on universe’s expansion rate
Quasar observations add to discrepancy in measurements of the universe’s expansion speed.
