Near-Earth Asteroids as of July 2025

Each month, NASA’s Planetary Defense Coordination Office releases a monthly update featuring the most recent figures on NASA’s planetary defense efforts,

NASA Science
Percolating Clues: NASA Models New Way to Build Planetary Cores

A new NASA study reveals a surprising way planetary cores may have formed—one that could reshape how scientists understand the early evolution of rocky

NASA Science
NASA’s Dragonfly Mission Sets Sights on Titan’s Mysteries

When it descends through the thick golden haze on Saturn’s moon Titan, NASA’s Dragonfly rotorcraft will find eerily familiar terrain. Dunes wrap around

NASA Science
Rebekah Dawson-Rigas

Rebekah Dawson-Rigas is a Program Scientist in the Planetary Science Division (PSD) at NASA Headquarters. She serves as Program Officer for the Exoplanet

NASA Science
Dr. Louise M. Prockter

Dr. Louise Prockter is the Planetary Science Division Director (Science Mission Directorate) at NASA Headquarters in Washington DC.

NASA Science
Planetary Alignment Provides NASA Rare Opportunity to Study Uranus - NASA

When a planet’s orbit brings it between Earth and a distant star, it’s more than just a cosmic game of hide and seek. It’s an opportunity for NASA to improve

NASA
Can Solar Wind Make Water on Moon? NASA Experiment Shows Maybe 

Scientists have hypothesized since the 1960s that the Sun is a source of ingredients that form water on the Moon. When a stream of charged particles known as

NASA Science
Have We Been to Uranus? We Asked a NASA Expert: Episode 56 - NASA

Have we ever been to Uranus?

NASA
NASA’s Planetary Defenders Documentary Premieres April 16 - NASA

NASA is bringing the world of planetary defense to the public with its new documentary, “Planetary Defenders.”

NASA
NASA Update on the Size Estimate and Lunar Impact Probability of Asteroid 2024 YR4 

Since near-Earth asteroid 2024 YR4 was first discovered in December 2024, NASA and the worldwide planetary defense community have continued to observe the

NASA Science