Jupiter's super-volcanic moon, Io, boasts grand, meandering dunes created by lava flows beneath the moon's surface, a new study shows.
Our solar system is filled with planets, asteroids, comets, the sun and more, making it a wealth of discoveries waiting to be found. See the latest discoveries from across our solar system here.
Mars, the moon and asteroids will get a deeper look from these spacecraft with eight NASA mission extensions.
You can watch a big asteroid make a safe flyby of Earth today (April 26) if you have strong Internet access.
Pluto is lucky to exist in the orbit that it does, according to new computer simulations that show how the dwarf planet skirts near a chaotic orbit that could potentially destroy the beloved world.
The quarter-phase moon points to a stunning set of planets low in the sky: Saturn, Mars, Venus and Jupiter.
A key committee of scientists has recommended that a flagship mission to Uranus should be NASA's highest-priority large planetary science mission for the next decade.
The solar system is overflowing with fascinating destinations, but NASA can only operate so many missions.
In 2006, and after much debate, the International Astronomical Union came up with a new definition for a planet. And for the first time, the term "dwarf planet" was used.
Two decades worth of observations revealed unexpected cooling of the solar system's most distant planet Neptune amid astronomical summer.
The surface of asteroid Bennu acts like an impact-absorbing crumple zone that protects the space rock from forming craters, a new study based on OSIRIS-REx observations reveals.
When comets first appear near Earth, their bright tails of ionized gas stun observers, but on every subsequent return, they become dimmer.
Venus, Saturn and Mars will be visible and very close together this week in the predawn sky. Here's how to see it.
A fresh assessment of a distantly risky asteroid brings good news: it's even less of a threat than astronomers had feared.
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.
China is considering adding a mission to Venus to its plans for planetary exploration, according to a senior Chinese space official.
Staring out into space is a time-tested technique for making long journeys pass more quickly, but not one often applied at the scale of the solar system.
Ceres is the most dominant member of the asteroid belt but it doesn't look like the other asteroids.