Measurements of ancient light from the cosmic microwave background suggest that the universe is remarkably flat. But that ...

The two keys to Edwin Hubble 's breakthrough discovery were forged by others in the 1910s. The first key, the period-luminosity scale discovered by Henrietta Leavitt, allowed astronomers to calculate ...

The Universe is big, as Douglas Adams would say. The most distant light we can see is the cosmic microwave background (CMB), which has taken more than 13 billion years to reach us. This marks the edge ...

The Fate of the Universe: Freeze or Rewind? Much of cosmology hinges on what will ultimately happen to our Universe. Since the 1930s, Edwin Hubble revealed that the cosmos is expanding. Going further, ...

The cosmic microwave background (CMB) is the universe's oldest light, leftover thermal radiation from about 380,000 years ...

JWST has revealed that galaxies were spreading carbon, oxygen, and other heavy elements through space just 500 million years ...

NASA's Nancy Grace Roman Space Telescope will investigate questions about the composition of the universe and its ultimate ...

A particle collider experiment just revealed something unexpected about how the fiery soup of particles that filled the ...

As counterintuitive as it may seem, the universe has no center, and it has no boundary. The idea of a Big Bang acting like a giant fireworks explosion hurtling matter and energy outward is pervasive, ...