📣Discovery alert! One of NASA's planetary defense telescopes first observed an interstellar comet passing through our solar system. The comet is the third object we've found that has come from outside our solar system. It poses no threat to Earth.

RT @NASASolarSystem: At NASA, we find asteroids before they find us. International #AsteroidDay aims to raise public awareness about impact….

A new observation from @NASAWebb of asteroid 2024 YR4 has improved our knowledge of where the asteroid will be on Dec. 22, 2032 by nearly 20%, thus raising the chance of a lunar impact to 4.3%. 2024 YR4 is now too far to observe until 2028.

NASA's Planetary Defense Coordination Office is charged with finding, tracking & characterizing near-Earth objects. Here's what we've found thus far:

NASA's Planetary Defense Coordination Office is on the hunt for asteroids and comets that come into Earth's celestial neighborhood. Here's what we've found so far: 

RT @NASA: Finding asteroids before they find us. Meet NASA scientists working to track and monitor near-Earth asteroids, and protect our p….

RT @NASA360: We’re watching the skies so you don’t have to. Our new documentary — Planetary Defenders — premieres Wednesday, April 16, 20….

RT @NASA360: Asteroids are real. So is the team keeping Earth safe from them. Our new documentary — Planetary Defenders — premieres Wedne….

RT @NASA360: At NASA, we’re on the hunt for asteroids that could come a little too close for comfort. Learn how in our new documentary, Pla….

Every night around the world, planetary defenders are scanning the skies. Their mission: Find, track and study asteroids that pass near Earth. Watch the official trailer for NASA’s Planetary Defenders, premiering Wednesday, April 16, 2025 on NASA+.

232. That's the number of near-Earth asteroids discovered in March. @NASA's Planetary Defense Coordination Office is charged with finding, tracking & characterizing near-Earth objects. Here's what we've found thus far:

Thanks to @NASAWebb, we have more information about asteroid 2024 YR4. It's about the size of a 10-story building. Based on data from Webb and ground-based telescopes, the asteroid also has a nearly 4% chance of impacting the Moon in 2032.

RT @NASAJPL: We're excited to have NEO Surveyor back at JPL for the next portion of its assembly! . For the next several weeks, engineers a….

Thanks to #PlanetaryDefense efforts at @NASA and across the globe, we have discovered over 11,200 near-Earth #asteroids bigger than 140 meters wide - a size of asteroid big enough to cause regional damage in the event of an Earth impact. 🔭 . Learn more:

What do we know about asteroids & comets in Earth's celestial neighborhood? #PlanetaryDefense, which includes finding, tracking & characterizing near-Earth objects, is part of @NASA's mission. Here's what we've found thus far:

All clear: NASA analysis drops asteroid 2024 YR4's impact probability to 0.004%, meaning it is expected to safely pass by Earth in 2032. NASA’s #PlanetaryDefense team will continue to monitor all known asteroids that may come our way. Learn more:

You’ve heard about asteroid 2024 YR4, so let’s talk about it. What are the chances it’ll hit Earth? Why do those odds keep changing? Should you be worried? (Spoiler alert: No). Get the facts from a NASA expert and find the latest info on this asteroid at:

Observations made on Feb. 19 – 20 of asteroid 2024 YR4 have further decreased its chance of Earth impact on Dec. 22, 2032, to 0.28%. NASA’s planetary defense teams will continue to monitor the asteroid to improve predictions of its trajectory. More:

New observations of 2024 YR4 have enabled planetary defense experts to refine the asteroid's chance of impact in 2032. As nightly observations continue, the impact probability will continue to be updated. Learn more: