The signal appears to have been generated inside the planet and not by any surface-level phenomenon. Three other seismic events were detected on 14 March, 10 and 11 April, but they were much smaller and their origins more ambiguous.
Mercury is now the second rocky planet—after Earth—for which we have evidence of a solid inner core. It’s not an exact value, but the mere presence of a solid inner core helps to understand how the planet generates its magnetic field.
There was a big stir when reports emerged that the Curiosity rover had detected methane on Mars. But now an independent source has also detected methane on Mars.
Juno took the photo 8,000 miles from the cloud tops during its 18th close flyby of Jupiter on February 12. Overall, 32 flybys are planned, so Juno is just beginning the second half of its flybys.
There’s a massive, growing wall of evidence showing that Mars may have had the necessary conditions for life in the past. ESA’s High-Resolution Camera on the Mars Express Orbiter, there are clear signs of a system of river valleys.
New NASA research confirms that Saturn is losing its iconic rings at the maximum rate. The rings have less than 100 million years to live. This is relatively short, compared to Saturn's age of over 4 billion years.
Astronomers have discovered a new extremely distant object far beyond Pluto with an orbit that supports the presence of an even-farther-out, Super-Earth or larger Planet X.
Hubble Space telescope snapped a series of stunning images of auroras dancing in the sky. The observations were taken before and after the Saturnian northern summer solstice.