Asteroids

Published in Scientific Reports, the new study by astronomers Amir Siraj and Avi Loeb of the Harvard-Smithsonian Center for Astrophysics, propose that a series of break-ups and chance events sent the huge chunk of space rock our way.

Astrophysicists Chart Source of Asteroid That Killed Dinosaurs

A new model explains a possible route for the extraterrestrial rock before it blasted Earth

A Japanese space capsule seen falling back to Earth over Australia. The capsule, released from the JAXA space probe Hayabusa2, contains samples of an asteroid called Ryugu that is located roughly 180 million miles from our planet.

Japan Retrieves Space Capsule Full of Asteroid Samples in Australia

The successful landing marks the completion of Japan’s Hayabusa2 mission, which studied the 3,000-foot-wide asteroid Ryugu

This artist's rendering shows the OSIRIS-REx spacecraft descending towards asteroid Bennu to collect a sample.

NASA Snags Its First Asteroid Sample

On a mission more than 200 million miles away from Earth, the OSIRIS-REx spacecraft grabbed rocks from Bennu

Bennu is shaped like a three-dimensional diamond and seemingly smooth from far away. OSIRIS-REx is in the foreground of this artist’s replication. The spacecraft will gather a sample from Bennu next week.

What an Asteroid Could Tell Us About Ancient Earth

Knowing those rocks’ origins will help scientists learn more about the composition of objects in the solar system and asteroid belt

This mosaic of Bennu was created using observations made by NASA’s OSIRIS-REx spacecraft that was in close proximity to the asteroid for over two years.

Asteroid Bennu Could Shed Light on How Ingredients for Life Reached Earth

New, detailed imagery of the asteroid’s surface show that it’s covered in boulders and carbon-containing molecules

The projected path for 2020 SO, a space object that astronomers predict will become Earth's mini-moon in October, possibly staying until May 2021. The blue object in the center of the circle is Earth.

Earth May Soon Get Another Mini-Moon, but It's Probably Just a Piece of Space Trash

It could be an asteroid—or, as one astronomer suggests, it could be a rocket booster from the 1960s

This orthographic projection shows Ceres, centered on Occator crater and the brightest spot on Ceres.

NASA Mission Shows Dwarf Planet Ceres Is Geologically Active

Seven studies of data from the Dawn spacecraft’s final orbit makes the case for liquid under the dwarf planet's surface

Artist's impression of the Chicxulub impact.

After the Dinosaur-Killing Impact, Soot Played a Remarkable Role in Extinction

The famous impact 66 million years ago kicked up soot into the atmosphere that played an even bigger role in blocking sunlight than experts had realized

An artist's impression of 'Oumuamua, first spotted in 2017.

Scientists Suggest New Origin Story for 'Oumuamua, Our Solar System’s First Interstellar Visitor

Perhaps the cigar-shaped object is a shard from a shredded planetary body, a computer simulation suggests

Hayabusa2 deployed a camera to film the plume of regolith thrown up by the impact.

Japan's Experiment to Calculate an Asteroid's Age Was a Smashing Success

The spacecraft Hayabusa2 hurled a four-pound copper ball toward the asteroid's surface at about 4,500 miles an hour to create an artificial crater

An artist's concept of the solar system

Where Will NASA Explore Next? Here Are the Four Shortlisted Missions

Targets include Venus, Jupiter’s moon Io and Neptune’s moon Triton

The asteroid Pallas, imaged by the European Southern Observatory's Very Large Telescope

The Most Cratered Object in the Asteroid Belt Looks Like a Golf Ball

Pallas's odd orbit sends it crashing through the asteroid belt, colliding with other objects along the way

An image of asteroid 2020 AV2, taken on January 8, 2020 by the Elena robotic unit part of the Virtual Telescope Project

Astronomers Spot First Asteroid Nearer to the Sun Than Venus

Such “intervenusian” rocks are both rare and difficult to detect

The Quadrantids meteor shower, though fleeting, is famous for its especially bright, colorful "fireballs"

How to Catch the Quadrantids, the First Major Meteor Shower of the 2020s

This cosmic light show will peak in the predawn hours of January 4

After DART smashes into an asteroid, the Hera spacecraft will analyze the impact.

A Spacecraft Will Follow NASA's Asteroid-Smashing Mission to Measure the Effects of the Impact

The European Space Agency's Hera mission will collect data after NASA's DART mission impacts the asteroid Didymos B

NASA Names Most Distant Object Ever Explored 'Arrokoth,' the Powhatan Word for Sky

The space rock's initial nickname, Ultima Thule, drew criticism for its ties to Nazi ideology

An artist's depiction of an asteroid impacting the Earth.

What Happened the Day a Giant, Dinosaur-Killing Asteroid Hit the Earth

Using rock cores from Chicxulub crater, geologists piece together a new timeline of the destruction that followed impact

Astronomers Make Massive Discovery on the Far Side of the Moon

The heavy core of a giant asteroid may be buried beneath the moon's South Pole-Aitken basin

A field photo showing the impact deposit containing deformed pink sandstone.

An Ancient Asteroid Crater May Be Hiding Off Scotland’s Coast

Scientists think they have honed in on the spot where the collision occurred 1.2 billion years ago

This artist's-concept illustration depicts the spacecraft of NASA's Psyche mission near the mission's target, the metal asteroid Psyche.

NASA Prepares to Build Spacecraft Bound for a Metal Asteroid

The Psyche spacecraft, headed to an asteroid with the same name, will explore a metal world thought to be the leftover core of a destroyed planet

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