We just can't get enough of these stunning views from the Orion capsule.

Atmospheric carbon dioxide hit a new record in April, averaging about 431 parts per million at NOAA's Mauna Loa Observatory. That's up from under 320 ppm when the site began measurements in 1958. Scientific American reports: Greenhouse gases, such as carbon …

The International Space Station has been in orbit for more than 25 years. Here's how to regularly spot the outpost from Earth.

These giant "virtual universe" simulations help scientists trace cosmic evolution across billions of years.

We already know that moving your body is important for brain health, but a new study reveals a possible reason why: It could be triggering a kind of hydraulic pump that flushes out fluid in the brain.

A forgotten signal found by citizen scientists could be a habitable Earth-like planet, named HD 137010 b. Here’s how astronomers found it.

Newton's gravitational constant, G, is still known to just 3 significant figures in 2026. New measurements merely highlight our uncertainty.

Solar emissions exert 'drag' on space junk orbiting Earth. From historical measurements across a period of 36 years, researchers have now shown that space junk begins to fall down much faster once the sun's activity across the solar cycle reaches approximatel…

Scientists have uncovered an unexpected mechanism by which the gut’s immune system maintains balance, challenging long-standing assumptions about how immune tolerance is regulated.