How do we measure the motion of stars in our galaxy?
Seeing The Future In The Stars
Watch the motion of two million stars as they drift over millions of years.
The Gaia mission has released initial data on more than a billion stars in our galaxy.
Get Off My Lawn
There’s a surprising lack of young stars in the center of our galaxy.
Lost At Sea
Only 1 in 5 Americans can see the Milky Way.
Heart Of Our Galaxy
The center of our galaxy is less than 30,000 light years away, but it is notoriously difficult to observe.
Milk Of Heaven
Cold gas and dust emits faint light in the submillimeter range, so to study this material we need good radio telescopes.
Leave It To Smith
There’s an interstellar cloud of gas heading for the Milky Way.
How do we determine the mass of our Milky Way galaxy? One way is to look at the trails of stars lost by globular clusters.