A distant 'exomoon' the size of Jupiter is changing how we think about the cosmos.

"We believe that the mechanism that 'turns on' these gigantic radio emissions is linked to the formation process of galaxy ...

Silver makes up only a minute fraction of the Sun, but its abundance carries clues about events that shaped the Milky Way.

The solar system’s smallest planet comes to a standstill this afternoon, ending its current retrograde path and beginning to ...

For the first time in history, astronomers have detected a sugar molecule floating among the gas clouds of interstellar space ...

Looking for a sky event this week? Check out our full Sky This Week column. July 21: Catch Titan near Saturn Let's look to ...

The Bullet Cluster is considered important evidence for the existence of dark matter. Now a research team believes it can explain its peculiarity differently.

The U.S. National Science Foundation National Radio Astronomy Observatory (NSF NRAO) has completed observations for the Very ...

Astronomy Photographer of the Year 2026 shortlist features eclipses, nebulae, aurorae and Milky Way images ahead of the September winners announcement.

For decades, astronomers puzzled over the Sun’s missing silver. Turns out, we just weren’t looking at it in the right way.

Second only to black holes, neutron stars – incredibly dense star remnants – are the densest objects in the universe. When neutron stars collide, they create ripples in the fabric of space and time in ...

Read Space & Astronomy on The Wall Street Journal ...