Astronomy

The European Space Agency is expanding its growing fleet of Earth-observing science Scout missions with the selection of two new satellites: Hibidis and SOVA-S.

Chosen from four final competing concepts, these missions will tackle very different but equally pressing scientific questions – from biodiversity below forest canopies to the effects of atmospheric gravity waves high above Earth.

For most of human history, the sky was not something we studied — it was something we lived with.

The post Stonehenge and the Geometry of the Sky appeared first on Sky & Telescope.

Nuclear power could enable long-term lunar missions, but NASA’s timeline may be too ambitious

Some extinct human ancestors and modern-day apes appear to share wrist traits that raise the question of whether our last common ancestor walked on its knuckles

Five different groups of predatory dinosaurs independently evolved disproportionately small arms, and it seems they did so because their heads became so large and powerful

Five different groups of predatory dinosaurs independently evolved disproportionately small arms, and it seems they did so because their heads became so large and powerful

In the closing decades of the 20th century, several proposed explanations were put forward for why humanity has not yet found evidence of extraterrestrial intelligence in the cosmos.

A Bermuda high parked over the western Atlantic is pulling sweltering air up from the south, challenging records in parts of the eastern U.S.

March was a scorching 9.35 degrees Fahrenheit hotter than the 20th-century average for the month, capping the hottest 12-month stretch for the U.S. since records began in 1895

SpaceX is now targeting the evening of May 21 to launch the latest and largest version of its Starship megarocket for the first time

Scientific American spoke to one of the people who are currently being monitored for possible hantavirus infection at the National Quarantine Unit in Nebraska

Ever since the JWST found over-massive black holes in the early Universe, researchers have been trying to understand them. Theory showed that black holes and their galaxies grew in synchronization with each other. That can't explain the JWST's findings, but new research might.

The Moon and Venus, center, are seen in conjunction above the Washington Monument, Monday, May 18, 2026, as viewed from the Mary W. Jackson NASA Headquarters Building in Washington.

The sudden resolution of a well-known conjecture highlights the growing adoption of AI as an assistant in high-level mathematics

A decade ago, we discovered an exceptionally exciting exoplanet that could be the best candidate for hosting alien life. Now we’re about to find out if it really is

A decade ago, we discovered an exceptionally exciting exoplanet that could be the best candidate for hosting alien life. Now we’re about to find out if it really is

A solar farm in a tidal bay has generated more electricity and profits than a nearby coastal solar farm, but challenges could arise as floating solar moves further offshore

A solar farm in a tidal bay has generated more electricity and profits than a nearby coastal solar farm, but challenges could arise as floating solar moves further offshore

The new image shows the galaxy NGC 1266, a transitional object with a clutch of young stars that likely collided with a smaller galaxy 500 million years ago