As water piles up before a ship, so material stacks up ahead of high-mass stars moving fast through space. These cosmic bows shocks revealed the runaway stars.
Astronomers have said globular clusters might not foster planets, and only one such planet is known. Here are new arguments on why they might exist, after all.
A space mission turned its X-ray vision on the Andromeda galaxy and spotted 40 X-ray binaries, exotic objects thought to play a role in our universe's evolution.
The last quarter moon combined with Earth at perihelion should usher in a gentle neap tide, with little variation between high and low tide over the next few days.
Dawn spacecraft now in its closest orbit of dwarf world Ceres. Mission Director Marc Rayman explains how the mission will help unlock our solar system's secrets.
Earth's night skies are lighter, thanks to towns, cities and industrial complexes. How that affects astronomy ... as well as birds, insects and people.
These disks contain the raw materials for planet formation. The magnetic fields can either help or hinder their growth. So this new research helps show how solar systems are born.
Amazing new image - obtained via an orbiting X-ray observatory - shows the disk of gas and dust surrounding a supermassive black hole to be clumpy, not smooth.