NGC 7023, also known as the Iris Nebula, is a reflection nebula in the constellation Cepheus. It's a bright nebula that's visible in the northern sky.

A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the ...

Observations show Andromeda has a more active star formation history than the Milky Way, potentially due to a past galactic ...

The full image includes some 2.5 billion pixels compiled from observations spanning more than 1,000 orbits around Earth ...

This stunning image of NGC 6951 is captured by NASA's Hubble Telescope. It is a barred spiral galaxy located in the constellation Cepheus. It is located at a distance of about 75 million light-years ...

To celebrate the 100-year Edwin Hubble discovery that Andromeda was a galaxy outside our own, astronomers release the most ...

"It looks like it has been through some kind of event that caused it to form a lot of stars and then just shut down” ...

Shaped like a megaphone, the upcoming mission will map the entire sky in infrared light to answer big questions about the ...

According to NASA, "there are hundreds of them"—massive black holes roaming space. It is now emerging and reshaping the ...

Watch the mesmerizing Tarantula Nebula video captured by the Hubble telescope, showcasing the most productive star-forming ...

NASA’s recent Image of the Day was the outer regions of the Tarantula Nebula, which is billed as one of the biggest and ...

Observations from NASA's Chandra X-ray telescope and the VLT have revealed jets blasting from supermassive black holes cause ...