Researchers have found evidence in the layers of the seafloor of the Aegean Sea for a previously unknown massive volcanic eruption some 520,000 years ago.
The rover Curiosity found sulfur crystals in a Martian rock for the first time. Researchers say they shouldn't be there and are seeking an explanation.
A new understanding of the heights of magnetic fields in the sun's active regions will lead to precise space storm alerts and help protect technology on Earth.
Scientists identified Milwaukee and Washington, D.C., as US cities most vulnerable to space weather due to the connection of their transformers to the network.
Members of the EarthSky community - including scientists, as well as science and nature writers from across the globe - weigh in on what's important to them.