Gaia spacecraft

How Do Stars Get Kicked Out of Globular Clusters?

Globular clusters are densely-packed collections of stars bound together gravitationally in roughly-shaped spheres. They contain hundreds of thousands of stars.…

2 years ago

A Dwarf Galaxy Passed Close to the Milky Way and Left Ripples in its Wake

An ancient collison with the Milky Way is still causing ripples in our galaxy according to Gaia data.

2 years ago

Thanks to Gaia we Know Exactly how and When the Sun Will die

Observations from the Gaia spacecraft gives us a detailed picture of how the Sun will live and die.

2 years ago

Recent Supernovae Produced Giant Cavities in the Orion Nebula

The Orion Nebula is a well-known feature in the night sky and is visible in small backyard telescopes. Orion is…

2 years ago

The Milky Way’s Most Recent Meal was a Galaxy it Gobbled up 8-10 Billion Years ago

The Milky Way had a sausage galaxy breakfast about 8 billion years ago

2 years ago

The Milky Way Broke one of its Arms

The Milky Way galaxy is our home, and yet in some ways, it is the least understood galaxy. One of…

3 years ago

Gaia Might Even be Able to Detect the Gravitational Wave Background of the Universe

Data from the Gaia satellite is so precise, it might be able to detect cosmic gravitational waves.

3 years ago

What Are Extrasolar Planets?

For countless generations, human beings have looked out at the night sky and wondered if they were alone in the…

3 years ago

Astronomers Improve Their Distance Scale for the Universe. Unfortunately, it Doesn't Resolve the Crisis in Cosmology

Astronomers have made the cosmic distant ladder more accurate, but that has only made the mystery of cosmic expansion even…

3 years ago

Some of the Milky Way’s oldest stars aren’t where they’re expected to be

Some of the oldest stars in our galaxy have orbits similar to the Sun, and we don't know why

4 years ago