Solar System Exploration
Twenty-five years ago, humanity first witnessed a collision between a comet and a planet.
How Historic Jupiter Comet Impact Led to Planetary Defense
NASA has selected eight new research teams to collaborate on research into the intersection of space science and human space exploration as part of the Solar System Exploration Research Virtual Institute (SSERVI).
NASA Selects Teams to Study Our Moon, Mars' Moons, and More
NASA has selected three finalists among a dozen concepts for future small satellites.
Small Satellite Concept Finalists Target Moon, Mars and Beyond
After nearly 16 years of exploring the cosmos in infrared light, NASA's Spitzer Space Telescope will be switched off permanently on Jan. 30, 2020.
How NASA's Spitzer Has Stayed Alive for So Long
Scientists have solved the mystery of how Ceres’ gigantic volcanic dome, Ahuna Mons, was formed.
Scientists Solve Mystery of Ceres' Lonely Mountain
DART – NASA’s first mission to demonstrate a planetary defense technique – will get one chance to hit its target, the small moonlet in the binary asteroid system Didymos.
NASA's First Planetary Defense Technology Demonstration to Collide with Asteroid in 2022
On April 13, 2029, asteroid Apophis will cruise harmlessly by Earth at distance of about 19,000 miles (31,000 kilometers). Scientists are already planning observations and science opportunities for the event.
Scientists Planning Now for Asteroid Flyby a Decade Away
Next week at the 2019 Planetary Defense Conference, NASA’s PDCO and other U.S. agencies and space science institutions, along with international partners, will participate in a “tabletop exercise” that will play out a realistic—but fictional—scenario for an asteroid on an impact trajectory with Earth.
NASA, FEMA, International Partners Plan Asteroid Impact Exercise
Five years of data have significantly advanced scientists' knowledge of asteroids and comets in our solar system, as well as the stars and galaxies beyond.
NEOWISE Celebrates Five Years of Asteroid Data
The Space Foundation presented NASA's Dawn mission with the 2019 John L. "Jack" Swigert, Jr., Award for Space Exploration.
NASA's Dawn Mission Honored by Space Foundation
A small asteroid has been caught in the process of spinning so fast it’s throwing off material.
Hubble Watches Spun-Up Asteroid Coming Apart
Bennu has revealed itself to be more rugged than expected, challenging the mission team to alter its flight and sample collection plans, due to the rough terrain.
NASA Mission Reveals Asteroid Has Big Surprises
Whether you're doing it for the nerd cred or the pie, this week on #10Things, we've got all the ways you can celebrate #PiDay with NASA.
10 Ways to Celebrate Pi Day with NASA on March 14
Just as dust gathers in corners and along bookshelves in our homes, dust piles up in space too. But when the dust settles in the solar system, it’s often in rings.
What Scientists Found After Sifting Through Dust in the Solar System
Using insights from the Dawn mission, scientists pursue clues to Ceres’ secrets by simulating its conditions on Earth.
Do-It-Yourself Dwarf Planet: Exploring Ceres in Labs
By looking at the Moon, the most complete and accessible chronicle of the asteroid collisions that carved our young solar system, a group of scientists is challenging our understanding of a part of Earth’s history.
NASA's Moon Data Sheds Light on Earth's Asteroid Impact History
On December 31, NASA's OSIRIS-REx spacecraft entered into orbit around the asteroid Bennu, and made Bennu the smallest object ever to be orbited by a spacecraft.
NASA's OSIRIS-REx Spacecraft Enters Close Orbit Around Bennu, Breaking Record
The asteroid will fly safely past Earth on Saturday, Dec. 22, at a distance of about 1.8 million miles (2.9 million kilometers).
Holiday Asteroid Imaged with NASA Radar
Recently analyzed data from NASA’s OSIRIS-REx mission has revealed water locked inside the clays that make up its scientific target, the asteroid Bennu.
NASA's Newly Arrived OSIRIS-REx Spacecraft Already Discovers Water on Asteroid
On New Year's Day 2019, NASA's New Horizons will fly by a distant Kuiper Belt Object—and open a new chapter in how we define our place in the cosmos.
To Ultima and Beyond: Our Solar System's Small Worlds
As OSIRIS-REx closes in on its target destination, the asteroid Bennu, anticipation is building for the first-ever, closeup glimpse of this prominent clump of rock. Meet a few members of our team.
People of OSIRIS-REx
Here’s a lineup of the various kinds of small bodies that orbit the Sun and sometimes impact planets and each other.
The Usual Suspects: a Rogues Gallery of Asteroids, Comets and Other Witnesses to History
Small worlds witnessed dramatic changes in our solar system that occurred long before humans. Here's how we're studying them.
Cosmic Detective Work: Why We Care About Space Rocks
NASA will host a live Science Chat at 2 p.m. EST Wednesday, Nov. 7, to discuss upcoming encounters of two of the agency’s planetary missions, New Horizons and OSIRIS-REx.
NASA Hosts Science Chat on Two Upcoming Out-of-this-World Encounters
NASA's Dawn spacecraft has gone silent, ending a historic mission that studied time capsules from the solar system's earliest chapter. Here are some great shots from its extended mission in the main asteroid belt.
10+ Great Shots from the Dawn Mission