The F ring, Saturn’s outermost ring, is perhaps the most active ring in our solar system, with features changing on a timescale of hours.
Dawn spacecraft has now moved to within about 900 miles (1,500 km) from the dwarf planet Ceres. See some early images from its new, closer orbit.
If so, where are we likely to find it? Could we ever get to it? Would we be able to drink it? A planetary geoscientist explains.
Researchers say these high-energy neutrinos come from sources beyond our Milky Way galaxy. They say the ability to discover them heralds a new form of astronomy.
A new explanation for the driving force behind ancient fire fountain eruptions on the moon. Plus … do some volatiles on the moon and Earth have a common origin?
The next Blue Moon will be on May 21, 2016. It’s a seasonal Blue Moon, the third of four full moons between the March equinox and the June solstice of 2016.
Why are sprites elusive? It doesn’t help that they flash on millisecond timescales. Also, they’re above thunderstorms, usually blocked from view on the ground.
The zodiacal light is an eerie light extending up from the horizon. No matter where you are on Earth, springtime or autumn is the best time to see it.
The Cassini spacecraft made its final flyby of Saturn’s moon Dione last week. Check out the spacecraft’s final breathtaking close views.
Despite rumors, no asteroid threatens Earth. All known Potentially Hazardous Asteroids have less than a 0.01% chance of hitting Earth in the next 100 years, says NASA.
Damaging electric currents in space affect Earth’s equatorial region, not just the poles, according to new research.
Every so often, the International Space Station (ISS) becomes visible in your night sky. Here’s how you can spot it.
A team of astronomers has discovered a planet outside our solar system, 100 light-years away, that resembles a young Jupiter.
In a dwarf galaxy 340 million light years away, astronomers have found the smallest black hole ever observed in the center of a galaxy.
The Cassini spacecraft will zip past Saturn’s moon Dione on Monday, August 17 . It will be the spacecraft’s final close flyby of this icy satellite.
Will Mars and the moon will appear the same size at some point in 2015? Gosh, no. What’s really amazing is the staying power of this 12-year-old hoax.
Have you seen Perseid meteors in your sky? If you have had cloudy skies – or even if not – enjoy these images from all around the world.
Zoom in to the Milky Way’s center until you see a close-up view of objects orbiting the supermassive black hole at the heart of our galaxy.
A study of 200,000 galaxies found they had lost half their energy in just 2 billion years.
Finding star distances isn’t easy. Here’s how it’s done, and why astronomers recently modified the distance estimate to the famous star Betelgeuse.
The Great Red Spot has been swirling wildly over Jupiter for the past 150 years, but scientists still aren’t sure what causes the gigantic storm’s reddish hues.