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  1. nasa.gov
    https://starchild.gsfc.nasa.gov › docs › StarChild › questions

    What is the biggest star we know? - NASA

    Question: What is the biggest star we know? Answer: The largest known star (in terms of mass and brightness) is called the Pistol Star. It is believed to be 100 times as massive as our Sun, …

  2. nasa.gov
    https://starchild.gsfc.nasa.gov › docs › StarChild › stars.html

    StarChild: Stars - NASA

    The star has now reached the red giant phase. It is red because it is cooler than the protostar phase and it is a giant because the outer shell has expanded outward. All stars evolve the …

  3. nasa.gov
    https://starchild.gsfc.nasa.gov › docs › StarChild › eris.html

    StarChild: Eris - NASA

    Eris is the largest known dwarf planet in our solar system. It is a little larger than Pluto. Eris is about 2400 kilometers wide. Eris was first found by a team of astronomers at Palomar …

  4. nasa.gov
    https://starchild.gsfc.nasa.gov › docs › StarChild › ceres.html

    StarChild: The dwarf planet Ceres - NASA

    Ceres was the largest known asteroid in the asteroid belt until 2006. In 2006, the International Astronomical Union formed a new class of solar system objects known as dwarf planets. By …

  5. nasa.gov
    https://starchild.gsfc.nasa.gov › docs › StarChild › milky_way.html

    StarChild: The Milky Way - NASA

    The Milky Way is over 100,000 light-years wide. It is called a spiral galaxy because it has long arms which spin around like a giant pinwheel. Our Sun is a star in one of the arms. When you …

  6. nasa.gov
    https://starchild.gsfc.nasa.gov › docs › StarChild › solar_system.html

    StarChild: The Solar System - NASA

    What is the solar system? It is our Sun and everything that travels around it. Our solar system is elliptical in shape. That means it is shaped like an egg. The Sun is in the center of the solar …

  7. nasa.gov
    https://starchild.gsfc.nasa.gov › docs › StarChild › sun.html

    StarChild: The Sun - NASA

    The diameter of our closest star, the Sun, is 1,392,000 kilometers. The Sun is thought to be 4.6 billion years old. The Sun is a medium size star known as a yellow dwarf. It is a star in the …

  8. nasa.gov
    https://starchild.gsfc.nasa.gov › docs › StarChild › quasars.html

    StarChild: Quasars

    This name, which means star-like emitters of , was given in the 1960s when quasars were first detected. The name is retained today, even though astronomers now know most quasars are …

  9. nasa.gov
    https://starchild.gsfc.nasa.gov › docs › StarChild › makemake.html

    StarChild: The Dwarf Planet Makemake - NASA

    After Eris and Pluto, Makemake is the third largest known dwarf planet. Along with fellow dwarf planets Pluto and Haumea, Makemake is located in the Kuiper Belt, a region outside the orbit …

  10. nasa.gov
    https://starchild.gsfc.nasa.gov › docs › StarChild › jupiter.html

    StarChild: The planet Jupiter - NASA

    Jupiter: The Largest Planet Jupiter is so large that all of the other planets in the solar system could fit inside of it. Jupiter is a large gas planet whose clouds change colors daily. This planet …