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Chinese astronauts added more debris shielding to the Tiangong space station during a 6.5-hour spacewalk on Friday (Aug. 15), according to state media. Two astronauts from the three-person Shenzhou 20

Mercury will be farthest from the sun on Tuesday (Aug. 19), granting early risers a perfect opportunity to spot the fleet-footed world somewhat separated from the glare of our parent

When the Artemis 2 astronauts launch to the moon next year, they will be accompanied by one of 25 plush toys just named a finalist in a NASA contest. The

SpaceX sent another batch of its Starlink broadband internet satellites into low Earth orbit today (Aug. 18), atop a Falcon 9 rocket launched from Vandenberg Space Force Base in California.

Beyond the familiar planets lies a fascinating frontier filled with icy worlds, mysterious orbits, and cosmic curiosities. These are the dwarf planets—small but mighty members of our solar system that

In June, more than 60 climate scientists warned that the remaining “carbon budget” to stay below a dire warming threshold will be exhausted in as little as three years at

Recently, SpaceX posted photos on X of its redesigned grid fin for its Super Heavy rocket booster. What is it? Grid fins are lattice-style control surfaces that help steer rockets

The northern lights could illuminate skies overnight on Aug. 18-19, thanks to a fast-moving stream of solar wind that may spark geomagnetic storm conditions, potentially triggering visible auroras across 15

Astronomers using the Hubble Space Telescope have discovered that a seemingly ordinary white dwarf star is actually the result of a dramatic stellar merger. This result, detailed in a new

Isaac Asimov (1920-1992), a legendary writer of science and science fiction, once noted in “The Solar System and Back,” that the planet Mercury is rarely visible when it is truly