Most normal matter in the universe isn’t found in planets, stars or galaxies – an astronomer explains where it’s distributed
If you look across space with a telescope, you’ll see countless galaxies, most of which…
‘Extraordinary claims require extraordinary evidence’ − an astronomer explains how much evidence scientists need to claim discoveries like extraterrestrial life
The detection of life beyond Earth would be one of the most profound discoveries in…
Cutting funding for science can have consequences for the economy, US technological competitiveness
America has already lost its global competitive edge in science, and funding cuts proposed in…
One large Milky Way galaxy or many galaxies? 100 years ago, a young Edwin Hubble settled astronomy’s ‘Great Debate’
A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe.…
Extraterrestrial life may look nothing like life on Earth − so astrobiologists are coming up with a framework to study how complex systems evolve
We have only one example of biology forming in the universe – life on Earth.…
Space travel comes with risk − and SpaceX’s Polaris Dawn mission will push the envelope further than any private mission has before
Space is an unnatural environment for humans. We can’t survive unprotected in a pure vacuum…