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

Comets are not the only celestial bodies with tails. Earth and Mercury also possess them, formed by different mechanisms.

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

One image released Friday shows what appears to be a bowl of novelty condoms with a caricature of Trump’s face; the bowl has a sign saying, “Trump condom $4.50,” and each condom bears an image of ...

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

Perihelion, the point in a planet’s orbit where it is closest to the Sun, is a fascinating phenomenon that shapes much of our ...

One of the most enduring traditions of the Army-Navy Game involves the special patches players on both sides have sewn onto ...

Fresh JWST data and new models challenge methane hints on TRAPPIST-1e, showing the gas would be rare, unstable, and difficult ...

The most convincing evidence to date of a dense atmosphere around a rocky planet outside the solar system has been found in ...

Of the seven Earth-sized planets circling the red dwarf star TRAPPIST-1, one world has become a special focus for astronomers. This planet ...

Q: At a four-way stop with three cars approaching the intersection, in what order do they go? The first to arrive is the first to leave, but then does it pass to the left or pass to the next to arrive ...

NASA’s James Webb Space Telescope has detected the best evidence ever recorded for an atmosphere on a rocky exoplanet.