Space
Perseverance Rover Explores an Ancient River Delta on Mars
River delta ecosystems are rich in life, which is why the Perseverance rover is exploring an...
Space
Space
The Elusive Unicorn Meteor Shower
Late last year an unusual news story flashed through the media sky like a shooting star:...
Space
A Clearer View of Exoplanets With Starshade
Since the first confirmed discovery of a planet beyond our solar system in 1993, astronomers have...
Space
What Are Spacequakes, and How Do They Happen?
Spacequakes occur when Earth's magnetic field "snaps," releasing plasma that slams into the geomagnetic field around...
Space
The Bootstrap Paradox, or When Time Travel Gets Weird
Time travel is a domain of paradoxes. Among these is the Bootstrap Paradox, raising basic questions...
Environmental Tech
Heavenly Hygiene: How Do Astronauts Shower In Space?
Hygiene in space, where water never falls from the sky and the soap floats inconveniently away,...
Science
Tails From the Orbital Plane: Why We Can See the Moon During the Day
Why can we see the moon during the day? Scientists have come to understand the orbital...
Science
The Hard Call: Looking for Life on Mars Amid Rubble, Rocks and Soil Samples
Asking "Is there life on Mars?" means searching for something unknown. These samples may help us...
Science
Space Gem or Fools Gold? The Search for Diamonds in the Sky
What is a space gem? Diamond-like minerals have been found in meteorites or detected by telescopes.
Science
Superionic Ice May Be the Most Common Form of Water in the Solar System
Superionic ice is thought to be the main form of ice on water-rich planets like Uranus...
Disasters: Prediction, Prevention and Relief
A Game of Cosmic DARTs: Planetary Defense Against Asteroids
What would happen if an asteroid hit Earth? We're working hard not to find out and...
Disasters: Prediction, Prevention and Relief
What Is Space Weather?
Everyone is familiar with the concept of weather and how it can affect daily activity and...
Frontiers
UFO Sightings Are Real, but Aliens Are Not Responsible
The U.S. Government recently confirmed reports by military pilots of UFO sightings — rebranded as "unidentified...
Science
Radio Bursts Hint at Powerful Blasts From Billions of Light-Years Away
Fast radio bursts, or FRBs, are one of the most exciting unsolved mysteries in astronomy today....