On September 18, 2017, ESA astronaut Paolo Nespoli shot this image from the International Space Station showing the Moon rising above the Earth’s horizon together with Mercury, Mars, the star Regulus, and Venus. Credit: ESA/NASA One has a thick poisonous atmosphere, one has hardly any atmosphere at all, and one […]

Coastal elevation in California. Coastal zones, which are defined to be those with elevations less than 10 m, are shown in red. Segments of the coast with elevations higher than 10 m are colored by a yellow gradient. Credit: USGS NED A majority of the world population lives on low […]

A blazing sunset lights up the evening sky. Credit: NOAA Four years of research confidently narrows range of 1.5°C-4.5°C down to 2.3°C-3.9°C. The most advanced and comprehensive analysis of climate sensitivity yet undertaken has revealed with more confidence than ever before how sensitive the Earth’s climate is to carbon dioxide. […]

The South Pole Telescope at the US Amundsen-Scott South Pole Station, with a bright aurora in July 2020. Credit: Geoff Chen Stars viewed from a place called Dome A in Antarctica can finally be seen without their twinkle – which means in much greater detail. Have you ever wondered why […]

VMC Image acquired on July 19, 2020 at 08:14:51 at an altitude of 10036.58 km above Mars, on Mars Express orbit number 20919. Credit: ESA/GCP/UPV/EHU Bilbao A mysteriously long, thin cloud has again appeared over the 20-km (~12 miles / 65,000 feet) high Arsia Mons volcano on Mars. A recurrent feature, the […]

Still image cross-section showing the impact (inset) and aftermath (main picture) of a 3D simulation of a giant planetary impact using 100 million particles, colored by their internal energy, similar to their temperature. Credit: Dr. Jacob Kegerreis, Durham University The giant impacts that dominate late stages of planet formation have […]

Credit & Copyright: Stephane Vetter (TWAN, Nuits sacrees) A sensitive video camera on a summit of the Vosges mountains in France captured these surprising fireworks above a distant horizon on June 26, 2020. Generated over intense thunderstorms, this one about 260 kilometers away, the brief and mysterious flashes have come to be known […]

Okmok Caldera. Credit: Alaska Volcano observatory, USGS/Wikimedia Commons Ice core samples provide new evidence of a massive volcanic eruption in 43 BCE. An international team of scientists and historians has found evidence connecting an unexplained period of extreme cold in ancient Rome with an unlikely source: a massive eruption of […]