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A low-density, weak-gravity region has been found below Olympus Mons and the Tharsis volcanoes, while Mars' northern hemisphere is littered with puzzling high-gravity structures beneath the surface.

Eleven objects found at the extremities of the solar system could mark the location of a 'Kuiper Belt 2.'

The secrets of dark matter might be hiding in the immense cosmic crashes that are colliding galaxy clusters.

Earth may have had a Saturn-like ring system long ago, created from the debris of a passing asteroid that our planet tore apart.

A review of Disney+ miniseries, "Lego Star Wars: Rebuild the Galaxy."

Scientists at NASA's Jet Propulsion Laboratory have recreated spider-like araneiform terrain, a geologic formation found on Mars, in a lab on Earth.

The most comprehensive map of clouds on Mars includes a variety of cloud patterns, including some that are unlike anything seen on Earth.

A SpaceX Falcon 9 rocket launched two European navigation satellites tonight (Sept. 17) and then landed safely, acing its 22nd mission.

If microscopic black holes born a fraction of a second after the Big Bang exist, then at least one may fly through the solar system per decade, generating tiny gravitational distortions that scientists can detect.

The FAA has proposed fining SpaceX more than $630,000 for allegedly failing to comply with regulations on two launches in 2023.

Comet Tsuchinshan-ATLAS will sweep around the sun on Sept. 27 to make a brief foray into the morning sky. Will it be a bright naked-eye object with a significant tail? Here's where and when you might be able to see it.

Four private astronauts are back on Earth after a five-day mission that set firsts and broke records in an effort to advance human spaceflight.

Space mission designers plan their routes in order to deliver their payloads to the Moon or Mars, or orbit efficiently within a set of cost, timeline and capacity constraints. But when they need to coordinate multiple space vehicles working together, route planning can get complicated.

The full moon of September will put on a dramatic show tonight, the exact timing of which will depend on your location.

Earth will grab itself another moon this month, but only briefly. The "mini-moon" in the form of asteroid 2024 PT5 will stick around for just two months.

A distant star has a dead star companion lurking in its vicinity that could be a monster-massive white dwarf, raising the question: how has it avoided being devoured by this cosmic zombie?

Newly released images of Mars reveal a "smiley" salt deposit on the Red Planet's surface. A related study suggests that similar deposits, which were left behind from ancient lakes, may be a good place to look for signs of former life on Mars.

IDW Publishing is warping its award-winning "Star Trek" comics to a new level with its "Star Trek: Lore War" crossover event in 2025.

A galaxy is robbed of its gas and stars in a new image from the European Southern Observatory.

The private Polaris Dawn was within view of the ISS when the four-person private mission concluded its work on Sept. 15. Experienced NASA astronaut Don Pettit wielded the camera.