These ancient galaxies, known as H-dropouts, defy our current understanding of the early universe.
A controversial theory that would overturn Einstein’s theory of general relativity could soon be tested.
The LISA Pathfinder mission is testing technology for a different type of gravitational wave detector—1.5 million kilometres from Earth.
These diminutive galaxies helped spark the epoch of reionization.
When the James Webb Space Telescope looks back in time, is this what it will see?
A new telescope has upstaged Hubble.
A sounding rocket discovered that about half of the universe’s stars are lost in intergalactic space. Can you hear us, Major Toms?
The supernova known as DES13S2cmm plays by its own rules.