Scientists Are Preparing for a Tunguska-Sized Asteroid Threat in a New Planetary Defense Exercise
What would happen if an asteroid struck the Earth? We spoke with a NASA planetary scientist who is working to find out.
Impact
Experts Say a Massive Space Object Will Speed Past Earth Tomorrow—Could It Strike Our Planet in the Future?
A massive space rock that once made its way onto a space agency's warning list for potentially dangerous objects is scheduled to pass by the Earth this Thursday, September 18, 2025.
Did a Mystery Object Just Hit Saturn? Astronomers Investigating Strange Flash Issue Urgent Call for Images
Astronomers are calling for images of Saturn captured over the weekend that may help document a rare impact event with a mystery object.
Citizen Scientist Discovers Evidence of Possible Crater Left by Ancient Meteorite Impact
A Canadian outdoor enthusiast may have discovered evidence of a previously undiscovered ancient meteorite impact site.
Massive Asteroid Knocked Ganymede Off Its Axis Four Billion Years Ago, Study Finds
A massive asteroid knocked Jupiter’s moon Ganymede off its axis about four billion years ago, according to new research.
New NASA Video Highlights How Often Asteroids Hit Earth
After an asteroid the size of a small refrigerator recently whipped by Earth at an altitude of only...