stars
What is Gravitational Lensing?
Gravity's a funny thing. Not only does it tug away at you, me, planets, moons and stars, but it can…
What it Would Look Like if the Sun was Replaced with Other Stars?
How would our horizon look if Earth orbited around another star, such as Alfa-Centauri, Sirius, or Polaris? Roscosmos TV has…
What Are the Stars in Orion’s Belt?
Orion dominates the winter sky in the northern hemisphere. Its large size and collection of bright stars -- such as…
Astronomy Cast Ep. 365: Gaia
The European Gaia spacecraft launched about a year ago with the ambitious goal of mapping one billion years in the…
Astronomy Cast Ep. 364: The COROT Mission
Before NASA's Kepler mission searched for exoplanets using the transit method, there was the European COROT mission, launched in 2006.…
What Is This Empty Hole In Space?
What may appear at first glance to be an eerie, empty void in an otherwise star-filled scene is really a…
Disorderly Conduct: Andromeda’s Mature Stars Exhibit Surprising Behavior, Says Study
To a distant observer, our own Milky Way and the Andromeda galaxy would probably look very similar. Although Andromeda is longer, more massive, and…
Rogue Star HIP 85605 on Collision Course with our Solar System, but Earthlings Need Not Worry
It's known as HIP 85605, one of two stars that make up a binary in the Hercules constellation roughly 16…
How Many Stars Did It Take To Make Us?
You know the quote, we're made of stardust. Generation after generation of stars created the materials that make us up.…
How Do We Know How Old Everything Is?
We hear that rocks are a certain age, and stars are another age. And the Universe itself is 13.7 billion…