Planetary Defense

Studying potential ways to detect, track, and defend Earth from threatening objects.

Articles about Planetary Defense

Space
Fireball Crashes Through Roof in Koblenz

Fireball Crashes Through Roof in Koblenz
A bright fireball streaked across western Europe on 8 March 2026; the European Space Agency is probing the event after fragments reportedly punched a football‑sized hole in a Kobl…
Science
Humans Nudge an Asteroid’s Solar Track

Humans Nudge an Asteroid’s Solar Track
A new Science Advances study confirms NASA’s DART impact in 2022 produced the first measurable change to an asteroid pair’s orbit around the Sun, demonstrating kinetic impact as a…
Space
Microbes Can 'Planet‑Hop' on Asteroids

Microbes Can 'Planet‑Hop' on Asteroids
A Johns Hopkins experiment shows hardy microbes can survive the shock of asteroid ejection and much of the transit to another world, strengthening the lithopanspermia idea and rai…
Science
Musk: 3I/ATLAS Could Threaten Humanity

Musk: 3I/ATLAS Could Threaten Humanity
Elon Musk warned on a recent podcast that the interstellar visitor 3I/ATLAS—while almost certainly not aimed at Earth—would be catastrophic if it ever struck the planet. Scientist…