New Horizons

Learn more about NASA's New Horizons mission, which performed history's first flyby of the Pluto system on July 14, 2015.

Related Topics: Interstellar Travel, NASA, Alien Planets

Latest Updates

The LightSail 2 solar-sailing spacecraft sent a selfie home as it completes its third year in orbit.

Pictures from space! Our image of the day

By Space.com Staff published

The solar-sailing spacecraft LightSail 2 has sent a selfie home as it completes its third year in orbit around Earth.

A group of stars is called a globular cluster. This globular cluster NGC 6380 is located approximately 35,000 light-years from Earth.

Stars: Facts about stellar formation, history and classification

By Charles Q. Choi, Ailsa Harvey published

Reference Learn how stars form, how stars and constellations are named, what happens when stars like our sun evolve, and ultimately, die.

An image of Pluto taken by the New Horizons probe in 2015 with evidence for potential cryovolcanism marked in blue.

Ice volcanoes on Pluto may still be erupting

By Rebecca Sohn published

An area of Pluto that researchers think was formed from the eruption of ice volcanoes is unique on the dwarf planet and in the solar system, a new study suggests.

A composite image of the Kuiper Belt object Arrokoth.

The icy 'space snowman' Arrokoth in deep space just got names for its best features

By Elizabeth Howell published

The New Horizons team names point to three prominent features on the odd, binary world.

There are so many interesting solar system facts, here are some of our favorites.

25 weird and wild solar system facts

By Elizabeth Howell, Vicky Stein published

Reference Explore our 25 weird solar system facts and see how our neighborhood is stranger than we could ever imagine.

Neptune

Neptune: Facts about the eighth planet from the sun

By Charles Q. Choi published

Neptune is the farthest planet from the sun and was the first to be predicted before it was discovered.

Hubble's view of Jupiter on Sept. 4, 2021, captured a more reddish equator than expected and bright red, elongated storms called "barges."

Jupiter: Facts about our solar system's largest planet

By Charles Q. Choi published

If Jupiter were the size of a basketball, Earth would be the size of a grape.

A mosaic image of Saturn

Saturn: Facts about the ringed planet

By Charles Q. Choi, Scott Dutfield published

Reference Learn about the physical characteristics of Saturn and its famous rings, what we know about Saturn’s moons and Saturn’s roots in Greek mythology.

The surface of Pluto’s icy Sputnik Planum — seen here in a photo captured by NASA’s New Horizons spacecraft during its close flyby of the dwarf planet on July 14, 2015 — is covered with churning ice “cells” that are geologically young and turning over due to convection.

Pluto's bizarre polygons now have a science explanation

By Elizabeth Howell published

The icy process may be present on other worlds.

Asteroids like Bennu are made from rocky debris

Asteroids: Fun facts and information about these space rocks

By Charles Q. Choi, Ailsa Harvey published

REFERENCE Learn about the size, shape and composition of asteroids as well as their history, naming conventions, and plans to mine them in the future.

A color image of Pluto

Dwarf planet Pluto: Facts about the icy former planet

By Charles Q. Choi, Scott Dutfield published

Reference Learn about the discovery of dwarf planet Pluto, its fascinating orbit and atmosphere and the controversy surrounding its planetary status.

Artist's impression of NASA's New Horizons spacecraft.

New Horizons: Exploring Pluto and Beyond

By Elizabeth Howell published

New Horizons was the first spacecraft to visit dwarf planet Pluto and Kuiper Belt object Arrokoth. The spacecraft is still actively exploring the solar system.

Comet C/2012 S1 (ISON) imaged by the TRAPPIST-South national telescope at the European Southern Observatory's (ESOs) La Silla Observatory on November 15, 2013.

Comets: Facts about the 'dirty snowballs' of space

By Charles Q. Choi, Daisy Dobrijevic published

Learn about the composition and orbit of comets, as well as the history of their discovery, famous comets and space missions to analyze them.

The yellow arrow shows the trajectory of New Horizons over the surface of Pluto.

NASA celebrates New Horizons' historic Pluto flyby in 2015 with awesome new videos

By Tereza Pultarova published

NASA has released new visualisations of the dwarf planet Pluto and its largest moon Charon to commemorate the first-ever up close exploration of the distant worlds.

One of the first images taken by the ESA/NASA Solar Orbiter during its first close pass at the sun in 2020.

Earth's sun: Facts about the sun's age, size and history

By Charles Q. Choi published

Read about the history and future of Earth’s sun as well as fun facts about the sun’s age, size, temperature, and phenomena like solar flares.

Pluto's famous "heart," as seen by NASA's New Horizons spacecraft during its 2015 flyby of the dwarf planet.

NASA's New Horizons Pluto spacecraft is still exploring, 50 AU from the sun

By Mike Wall published

New Horizons is about to reach some very rarefied space, but don't expect the NASA probe to rest on its considerable laurels.

Rendering of NASA's New Horizons spacecraft, which will reach 50 AU (astronomical units), or 50 times the distance between Earth and the sun, on Saturday, April 17, 2021, a mile marker surpassed by only four other robotic probes in history. To celebrate the milestone, New Horizons pointed its camera out toward the direction of Voyager 1, the most distant spacecraft (marked with a yellow circle).

NASA's New Horizons probe reaches rare distance, looks out to farthest Voyager

By Robert Z. Pearlman published

Fifteen years after launching and six years after becoming the first probe to fly by Pluto, NASA's New Horizons is reaching 50 AU, a marker that has been passed only by four other spacecraft.

Virgin Galactic's VSS Unity spaceliner captured this view of Earth during the vehicle's first trip to space, on Dec. 13, 2018.

New Horizons Pluto probe leader Alan Stern is going to space with Virgin Galactic

By Mike Wall published

Alan Stern, who leads NASA's New Horizons mission to Pluto and beyond, has been selected to fly aboard SpaceShipTwo, Virgin Galactic's six-passenger suborbital space plane.

Mars at opposition

Mars Opposition 2020: How to See It and What to Expect

By Samantha Mathewson published

Get ready to see the Red Planet up close this week: , offering the closest view of the planet until 2035.

Arrokoth

2014 MU69: Arrokoth, the most distant object ever explored

By Nola Taylor Tillman published

New Horizons' historic flyby of the KBO 2014 MU69, also known as Arrokoth, has revealed incredible insights about the birth of the solar system.