Planets

More Stories in Planets

  1. Space

    Explainer: All about orbits

    A handful of rules can describe the route some object repeatedly takes around another in space. Calculating that path, however, can be quite complex.

    By
  2. Earth

    Scientists Say: Atmosphere

    An atmosphere is an envelope of gas around a planet, dwarf planet or moon.

    By
  3. Planets

    Mercury’s surface may be studded with diamonds

    Billions of years of meteorite impacts may have transformed much of Mercury's graphite crust into precious gemstones.

    By
  4. Planets

    Let’s learn about Pluto

    Once known as a pipsqueak planet, Pluto is now the solar system’s best known dwarf planet.

    By
  5. Planets

    No, organic molecules alone don’t point to life on Mars

    These carbon-based molecules, found in a meteorite, may reflect merely a mixing of water and minerals on the Red Planet over billions of years.

    By
  6. Space

    The long-awaited James Webb Space Telescope has a big to-do list

    The James Webb Space Telescope has been in the works for so long that new fields of science have emerged for it to study.

    By
  7. Space

    Astronomers may have found first known planet in another galaxy

    The spiral-shaped Whirlpool galaxy may be home to the first planet spotted outside our own Milky Way galaxy.

    By
  8. Planets

    NASA’s Perseverance rover grabbed its first Martian rocks

    Two finger-sized pieces of stone drilled from a basalt rock are the first bits of Mars ready to be brought to Earth.

    By
  9. Planets

    Pluto is no longer a planet — or is it?

    In the 15 years since Pluto lost its status as a planet, some scientists continue to use whatever definition works best for them.

    By