Space

A fast radio burst lasts about a thousandth of a second, and then it is gone. What survives the trip is a smear: the burst's low frequencies arrive slightly behind its high ones, delayed in…

Four astronomers have reanalyzed JWST measurements of starlight filtered through the atmospheres of 10 planets orbiting other stars, using one consistent method for all of them. They report that the…

Almost every massive star in the galaxy has a companion, and almost everything known about those pairs comes from looking at them long after they finished forming. By then the orbit has had millions…

Astronomers have placed new constraints on two small planets orbiting K2-223, a star much like the Sun, and one of them is smaller than Earth while completing an orbit in about half a day. Dawid…

Astronomers have measured colors, sizes and spin rates for 15 near-Earth asteroids that nobody had characterized before, and several of the larger ones appear to turn faster than an object held…

Isar Aerospace's Spectrum rocket reached orbit and deployed its payloads on Sept. 5, the vehicle's second flight and its first carrying satellites. The company said liftoff came at 10:12 p.m. CEST…

Katalyst Space's LINK spacecraft flew to within 12 to 15 kilometers of NASA's Neil Gehrels Swift Observatory last week, carrying out proximity and hardware tests that remained after the reboost…

India's space agency says its GSLV-F17 rocket placed the EOS-05 Earth-observation satellite into a sub-geosynchronous transfer orbit on Sept. 4. The launch was the 19th flight of the country's…

The European Space Agency said BepiColombo separated its Mercury Transfer Module from the rest of the spacecraft on Sept. 3. The maneuver is the first step in an arrival sequence that will place the…

For nearly a decade, the TRAPPIST-1 planets have been weighed by a clock. Seven Earth-sized worlds circle a dim red dwarf on orbits packed so tightly that each planet tugs its neighbors along as it…

The last of the European Space Agency's four Cluster satellites reentered Earth's atmosphere over the South Pacific on Sept. 1 at 21:30:31 UTC, ESA said, ending 26 years of Cluster operations and…

Shortly after 1 p.m. BST on Sept. 3, the flight control team at ESA's European Space Operations Centre in Darmstadt was not watching a spacecraft. It was listening for a signal. More than 200 million…