Astronomy

Decades ago, a renegade physicist suggested that gravity isn't so much a force as just a byproduct of the universe's tendency to get more disordered. Now this idea might finally be testable

Russian ambush drones have been seen in Ukraine fitted with cheap solar panels, which enable them to lurk indefinitely, waiting for a target to come near

A team of archaeologists excavating the ancient Maya city of Caracol discovered the tomb of its first ruler, which contained pottery, jadeite jewelry and a rare death mask

Video: 00:07:00

Highlights and liftoff of Vega-C flight VV27 from Europe’s Spaceport in French Guiana, at 23:03 local time on 25 July (03:03 BST/04:03 CEST on 26 July).

Flight VV27 was operated by Arianespace and launched Airbus’s four CO3D satellites and the French space agency CNES MicroCarb mission.

The four small satellites in the CO3D constellation (an abbreviation of the French 'Constellation Optique en 3D') are set to map the globe in three dimensions from low Earth orbit, to serve public and private sector needs.

MicroCarb is designed to map sources and sinks of carbon dioxide on a global scale. ESA coordinated and procured the launch of MicroCarb on behalf of the European Commission, as part of its In-Orbit Demonstration / In-Orbit Validation (IOD/IOV) programme.

Can some supernovas explode twice?