Our Solar System may once have hosted not two, but three ice giants. This long-lost world could help explain why the outer planets and their moons look the way they do today.
The Northwest Africa (NWA) 12774, an angrite meteorite, appears to be a fragment of a vanished protoplanet, offering the strongest evidence yet that a large planetary body formed and was later destroyed during the Solar System’s chaotic infancy.
Shalbatana Vallis is an impressive channel near Mars’s equator. It is 1300 km in length - around the length of Italy. Formed formed around 3.5 billion years ago, when huge quantities of groundwater rose up to Mars’s surface.
Observations suggest that Nereid is no party crasher like Triton and likely survived by escaping into its extreme, elliptical orbit around Neptune.
Our solar system has been moving through the local interstellar cloud, left by a supernova, for over past 80,000 years.
Astronomers have spotted a tiny world with an atmosphere beyond the orbit of Neptune. It should be too small for an atmosphere to be possible.
A team of astronomers have discovered a giant volcanic cave hiding beneath the surface of Venus.
The most recent interstellar visitor was crisscrossing our galaxy for some 10 to 12 billion years before it came near the Sun.
A NASA rover has discovered more building blocks of life on Mars after carrying out a chemistry experiment never before conducted on another planet.
Now Perseverance’s ground-penetrating radar (called RIMFAX) detected older river delta buried tens of meters beneath Jezero crater.
Jupiter’s icy moons may have been seeded with the chemical ingredients for life from the very beginning.
Icy moons circling the outer planets may be far more dynamic. New research suggests that when heat from tidal forces melts their ice shells from below, the sudden drop in pressure could cause hidden oceans to boil beneath the surface.
Scientists argue that two Saturnian moons, Titan and Hyperion, are not primordial worlds, but the result of a dramatic merger between two ancient moons.
The researchers found that additional studies of the data from Curiosity show that non-biological sources they had considered don’t fully explain the organics. They conclude, therefore, that a biological source is a reasonable hypothesis.
Vast amounts of hydrogen could also be locked away in our planet's core, attached to the densely packed alloyed iron that lurks therein
