According to NASA, multi-planet lineups are visible "every few years," but a seven-planet alignment is particularly uncommon, as each planet's orbit varies, with some moving more quickly and Mercury, ...

Explore the planets with NASA There are five officially recognized dwarf planets in our solar system: Ceres, Pluto, Haumea ... requires that a planet: orbit the sun is large enough to be round ...

The former planet will complete an orbit in another 153 years ... another four planets would join the solar system, (Ceres, Haumea, Makemake, and Eris). Astronomer Mike Brown, discoverer of ...

In the early 2000s, astronomers identified Haumea, Eris, Makemake, and other balls that orbit our sun. They'd all have to be call "planets" if the older definition of the word was used.

Haumea is a dwarf planet in the Kuiper Belt, a region of icy worlds beyond Neptune's orbit. It's one of the fastest-spinning objects in our solar system. Quaoar is a dwarf planet in the Kuiper belt, a ...

A secretive Space Force ship has returned to earth after spending 434 days in orbit conducting mysterious tests. The Boeing-made X-37B vessel was quietly launched by SpaceX in 2023 from NASA’s ...

The United States Space Force’s secretive X-37B space plane touched down to earth on Friday after spending 434 days in orbit conducting mysterious tests. The unmanned Boeing-made aircraft landed ...

A private spacecraft carrying NASA instruments to the surface of the moon in preparation for astronauts to return in the years ahead has reached lunar orbit about a month into its spaceflight.

Rocket Lab launched a high-resolution Earth-imaging satellite toward low Earth orbit this evening (Feb. 18). An Electron vehicle carrying the first "Gen-3" satellite for the geospatial ...