The Planetary System That Cannot Hold Still
Image: NASA/Goddard Space Flight Center Orbital mechanics is supposed to be the steadiest thing in the universe. Planets settle into their paths over millions of...
Journal
Journal
They Watched the Earth Set From the Far Side of the Moon
Four astronauts. 252,756 miles. Ten days. The Artemis II crew returned to the Moon's vicinity for the first time in 54 years, and today they...
Saturn Is Losing Its Rings — And Nobody Can Stop It
Image: NASA/JPL-Caltech/SSI. “The Day the Earth Smiled”: Saturn backlit by the Sun, captured by Cassini on July 19, 2013. Earth is the pale blue dot...
If the Moon Vanished Tonight, You'd Have Weeks to Live
Image: NASA/Apollo 8/Bill Anders. “Earthrise”: the first photograph of Earth rising above the lunar horizon, taken by astronaut William Anders on December 24, 1968. The...
What's Inside a Neutron Star Shouldn't Exist
Image: NASA/ESA/NRAO/AUI/NSF/G. Dubner (University of Buenos Aires). The Crab Nebula: the expanding remnant of a supernova witnessed in 1054 AD. At its heart spins a...
Light Is Slow — You Just Don't Live Long Enough to Notice
Image: NASA/ESA/S. Beckwith (STScI)/HUDF Team. The Hubble Ultra Deep Field: nearly 10,000 galaxies in a patch of sky smaller than a grain of sand held...
The Moon Isn't Grey — We've Been Seeing It Wrong for 500 Years
The moon looks grey from Earth. It is not. Its surface carries blue titanium seas, green olivine plains, and volcanic orange glass waiting to be...
They Came Home — The First Humans Back From the Moon in 53 Years
Image: NASA/U.S. Navy At 8:07 p.m. Eastern time on Friday, April 10, 2026, four human beings fell out of the sky and into the Pacific...
Some Planets Don't Orbit a Star — They Drift Between Them
Trillions of planets drift between stars with no sun, no orbit, no seasons. JWST found hundreds in the Orion Nebula. Some may harbor life.