Comet Lemmon was discovered in January 2025 and made its closest approach to Earth in late October 2025. But by November 2025 ...

American space agency NASA announced the first major science program for the Nancy Grace Roman telescope, aside from the ...

NASA's Nancy Grace Roman Space Telescope team has released detailed plans for a major survey that will reveal our home galaxy ...

NASA's Roman Space Telescope will soon map our Milky Way galaxy in infrared. This mission will reveal billions of stars and hidden galactic structures ...

New simulations reveal that the Milky Way’s odd split between two chemically distinct groups of stars isn’t a universal ...

How can a galaxy display perfectly defined spiral arms when the Universe had only a little over 10% of its current age? This ...

In fact, these jets often expand into wide plumes or “lobes” that fan out far above and below their host galaxies. The jets ...

New simulations of Milky Way-like galaxies reveal that the strange split between two chemically distinct groups of stars may ...

A surprisingly mature spiral galaxy named Alaknanda has been spotted just 1.5 billion years after the Big Bang—far earlier ...

On Dec. 15, 1612, the Andromeda galaxy was seen through a telescope for the first time by a German astronomer named Simon Marius. [‘On This Day in Space’ Video Series on Space.com] The Andromeda ...

The galaxy's discovery challenges our understanding of how galaxies were formed in the early period after the Big Bang.