ESA's Solar Orbiter captured views of the planet Mercury passing in front of the Sun. Multiple instruments aboard the ...

TRAPPIST-1e, an Earth-sized world in the system’s habitable zone, is drawing scientific attention as researchers hunt for ...

Monumentally important, this is the first image of an American astronaut in space. In the Project Mercury spacecraft named ...

Part 2 explores the dramatically different approaches to the launch systems, and the surprising similarities in the factors ...

Mercury, often considered the “elusive planet,” is notoriously difficult to observe due to its proximity to the Sun. However, ...

If you've never sighted this rocky little world for yourself, you'll never get a better opportunity than right now to see it.

Turns out, it's as tough to drop inward into the inner solar system, as it is to head outward. The problem stems from losing momentum from a launch starting point on Earth. It can take missions ...

An asteroid with the second-fastest unique orbit in the solar system—one that sees it traveling a complete run around our star in just 128 days—has been found hiding in the sun’s glare. Known as 2025 ...

If you watch sci-fi movies, you’d think that flying a spaceship is just like driving a slightly more complicated car (or a Winnebago in Spaceballs). And George Lucas gave us those galactic battles ...

An asteroid named 2025 PN7 will be sharing the Earth's orbit until 2083. Earth will have a visitor within its orbit for the next several decades, according to astronomers. An asteroid named 2025 PN7 ...

Meet 2025 SC79, which has the second-fastest unique asteroid orbit in the Solar System. It orbits the Sun in just 128 days! Washington, DC—A newly discovered asteroid travels around the Sun in just ...

A new listing of the 50 most concerning pieces of space debris in low-Earth orbit is dominated by relics more than a quarter-century old, primarily dead rockets left to hurtle through space at the end ...