The word "spectacular" comes to mind.
Astronomers point to Planet Nine.
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!
The vast majority of our galaxy is undetectable, but that didn't stop these researchers from devising a novel way to measure it.
A: The nanocraft have four small lasers on board powered by a nuclear isotope battery. The lightsail will be shaped to act