galaxies
A new image looks at the mysterious Cartwheel Galaxy, some 500 million light years from Earth.
"It's going to be fun, this telescope."
The word "spectacular" comes to mind.
Astronomers point to Planet Nine.
WHAT'S HAPPENING
New estimate puts the number at 1 trillion to 2 trillion.
Dragonfly 44 could help solve one of nature's biggest mysteries.
Astronomer Tabetha Boyajian aims to learn the truth about her namesake sun.
The plot covers 650 billion cubic light-years and contains 1.2 million galaxies.
Eat your heart out, Tatooine!
Astronomers have spotted a brilliant "fireworks" display millions of light years away.