Astronomy
Deepest X-ray Image Ever Made Contains Mysterious Explosion
Using data from the Chandra observatory, a team of researchers witnessed the most distant X-ray explosion ever observed, and are…
The Orbit of Uranus. How Long is a Year on Uranus?
A year on Uranus lasts almost as long as a century on Earth. And because of its extreme tilt, its…
Finite Light — Why We Always Look Back In Time
Light's finite speed make all gazing a ride in a time machine. Only a photon truly lives in the moment.
Watch Rotating Horns of Venus at Dawn
An old friend greeted us on our morning run yesterday, as we spied Venus in the dawn, 3 days after…
The Orbit of Pluto. How Long is a Year on Pluto?
Given its extreme distance from the Sun, Pluto has a very long orbital period. As such, a single year on…
What is the Color of Pluto?
Thanks to the New Horizons mission, which conducted the first detailed study of Pluto in 2014, we know that Pluto's…
What is an Astronomical Unit?
The average distance between the Sun and the Earth - 149,597,870.7 km (or 92,955,807 mi) - is known as an…
Messier 38 – The Starfish Cluster
Located in the direction of the northern Auriga constellation, some light 4,200 years from Earth, is the open star cluster…
See Mercury At Dusk, New Comet Lovejoy At Dawn
There are so many cool astronomical sights to see in late March including Mercury and a brand new comet!
Watch Stars Orbit The Milky Way’s Supermassive Black Hole
Watch several dozen stars in the center of our galaxy circle a massive, black "nothing."