Could there be another planet behind the sun?
If you've read your share of sci-fi, and I know you have, you've read stories about another Earth-sized planet orbiting on the other side of the Solar System, blocked by the Sun. Could it really be there?
Learn about Venus, the hothouse planet near Earth
Venus was once considered a twin to Earth, as it's roughly the same size and is relatively close to our planet. But once astronomers looked at it seriously in the past half-century or so, a lot of contrasts ...
What's important to know about planet Mercury?
Close by the Sun is Mercury, a practically atmosphere-like world that has a lot of craters. Until NASA's MESSENGER spacecraft arrived there in 2008, we knew very little about the planet—only part of it ...
A recipe for returning Pluto to full planethood
A storm is brewing, a battle of words and a war of the worlds. The Earth is not at risk. It is mostly a civil dispute, but it has the potential to influence the path of careers. In 2014, a Harvard led debate ...
Planets can alter each other's climates over eons
A new study sheds light on how exoplanets in tightly-packed solar systems interact with each other gravitationally by affecting one another's climates and their abilities to support alien life.
Dance of the planets in the evening sky
Armagh Observatory reports that the next two weeks provide a rare opportunity to observe the planets Venus, Mars and Uranus in the western evening sky after sunset, and the bright planet Jupiter rising high ...
Disintegrating rocky exoplanet could unlock secrets to how our solar system was formed
Exciting new research by astronomers at The Open University (OU) and the Universities of Warwick and Sheffield has opened up the chance to find out what distant planets are made of. The team of astronomers ...
Scientists identify mineral that destroys organic compounds, with implications for Mars Curiosity mission
Scientists have discovered that the mineral jarosite breaks down organic compounds when it is flash-heated, with implications for Mars research.
Learn all about Pluto, the most famous dwarf planet
As the New Horizons spacecraft gathers information about Pluto before and after its July 2015 close encounter, practically every day we're learning more about this dwarf planet.
Laser 'ruler' holds promise for hunting exoplanets
The hunt for Earth-like planets around distant stars could soon become a lot easier thanks to a technique developed by researchers in Germany.
Dawn captures sharper images of Ceres
Craters and mysterious bright spots are beginning to pop out in the latest images of Ceres from NASA's Dawn spacecraft. These images, taken Feb. 12 at a distance of 52,000 miles (83,000 kilometers) from the ...
Interesting facts about the planets
While the universe is a big place to study, we shouldn't forget our own backyard. With eight planets and a wealth of smaller worlds to look at, there's more than enough to learn for a few lifetimes!
What makes the solar system interesting to astronomers?
While most of us are stuck on planet Earth, we're lucky enough to have a fairly transparent atmosphere. This allows us to look up at the sky and observe changes. The ancients noticed planets wandering across ...
Massive clouds erupted 260km into Martian atmosphere – and no one knows why
Enormous cloud-like plumes reaching 260km above the surface of Mars have left scientists baffled. This is way beyond Mars's normal weather, reaching into the exosphere where the atmosphere merges with interplanetary ...