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.
Astronomers have spotted a brilliant "fireworks" display millions of light years away.
The vast majority of our galaxy is undetectable, but that didn't stop these researchers from devising a novel way to measure it.
A: Stephen Hawking, Mark Zuckerberg and Yuri Milner serve as the board of directors for the StarShot project. The project