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  • Betelgeuse before and after dimming
    Astronomy Lists

    10 Interesting Facts about Variable Stars

    In simple terms, a variable star is a star whose luminosity changes or fluctuates as seen from Earth. The changes in luminosity can be caused by a wide range of possible causes, some of which [...]
  • Hyades star cluster
    Astronomy Lists

    10 Easy Night Sky Targets for Binoculars

    The purpose of this list is to show that you do not always need a telescope to observe literally thousands of spectacular deep-sky objects (DSOs) in the night sky. In most cases, the objects on [...]
  • 10 Interesting Facts about Ganymede
    Astronomy Lists

    10 Interesting Facts about Ganymede

    Ganymede is the biggest satellite in the solar system, and also the biggest object in the solar system that does not have a substantial atmosphere. Discovered by Galileo in January of the year 1610 along [...]
  • Saturn
    Astronomy Lists

    10 Interesting Facts about the Missions to Saturn

    Saturn has been observed since prehistoric times, with the planet having played a major role in all major ancient cultures and religions throughout history. The ancient Babylonians, for instance, kept records describing detailed observations of [...]
  • Dorian (Theta Capricorni) is a white A-type main sequence dwarf, about 158 light-years away.
    Astronomy Lists

    10 Interesting Facts about White Dwarf Stars

    White dwarf stars are believed to represent the final evolutionary stage of stars that are not massive enough to end their lives in super or hypernovae events. Also known as “degenerate stars,” white dwarfs consist [...]
  • Outer Space
    Astronomy Lists

    10 Fun Facts About Outer Space

    Much of what is known about space science is hard to fully understand, even for the scientists who study the field. Fortunately, there are many more understandable, and cooler facts about space that we can [...]
  • Oort Cloud
    Astronomy Lists

    10 Interesting Facts about the Oort Cloud

    Named after the Dutch astronomer Jan Oort, but sometimes also known as the Öpik–Oort cloud, this hypothetical cloud of small, icy planetesimals is thought to surround the solar system out to a distance of more [...]
  • Callisto, Earth & Moon comparison
    Astronomy Lists

    10 Interesting Facts about Callisto

    Callisto is Jupiter’s second-biggest moon, and the third-biggest moon in the solar system, after another one of Jupiter’s moons, Ganymede, and then Titan, the largest moon of the planet Saturn. As with Jupiter’s main moons [...]

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