Fluffy strands of cosmic gas and dust illuminated by bright young stars form a beautiful cloudscape in a neighboring nebula.

Galaxies like the Milky Way boast more than spirals; they also have feathers, where clumps of new stars are born. Astronomers ...

Though tiny, this newfound satellite galaxy around M31 offers big lessons — and questions — about how galaxies evolve.

The European Space Agency has released the first batch of large-scale images from the Euclid space telescope, which ...

Although the telescope is just getting started on its mission, it has already delivered some impressive snapshots of the dark ...

The “dark energy” field that has fueled the expansion has been weakening over the past 4 billion to 5 billion years, new data ...

The European Space Agency has released its first tranche of data from the Euclid space telescope's mission to map the ...

Cosmic microwave background data support cosmology’s standard model but retain a mystery about the universe’s expansion rate.