When our sun and planets were born, the Kepler-444 system was already older than our solar system is now.
Posts by EarthSky
A panoramic view of the desert world next door, from one of the highest elevations reached by the Mars rover Opportunity in its 11 years on the Red Planet.
Try it yourself! With a little preparation and a good camera and with a macro lens, you can take your own photos of snowflakes.
At nightfall in January, stand with your back to Sirius, facing northwest. This is the direction our solar system moves through the Milky Way galaxy.
Scientific literature cites 50 to 100 light-years as the closest safe distance between Earth and a supernova.
In theory, our home galaxy Milky Way could be a wormhole – a galactic transport system – says a team of astrophysicists.
Uranus, like Earth, has four seasons. But that’s where the similarity ends. For starters, each season on Uranus lasts 21 (Earth) years.
This ghostly puff of smoke is actually a huge mass of swirling gas and cloud at planet Venus’ south pole, as seen by ESA’s Venus Express spacecraft.
When a raindrop hits a surface, tiny air bubbles burst from the drop in a fizz of aerosols. Watch the high-speed video.
Eta Carinae is a double system containing the most luminous and massive star within 10,000 light-years.