• 10 Interesting Facts about Callisto
    Astronomy Lists

    10 Interesting Facts about Callisto

    Callisto is Jupiters’ 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 [...]
  • 10 Black Hole Quotes
    Astronomy Lists

    10 Black Hole Quotes

    John Michell (1724–1793): “If the semi-diameter of a sphere of the same density as the Sun were to exceed that of the Sun in the proportion of 500 to 1, a body falling from an [...]
  • Orion Molecular Cloud Complex
    Astronomy Lists

    10 Interesting Orion Nebula Facts

    Most people mistake the Orion Nebula for a star in the constellation of Orion, but it is actually the most easily detectable naked-eye nebula in the entire night sky. It is also the favorite deep-sky [...]
  • Astronomy vs Astrology Quotes
    Astronomy Lists

    Astronomy vs Astrology Quotes

    In ancient cultures people noticed that astronomical events in the heavens seemed to impact life on Earth, such as stars and constellations appearing in the night sky at certain times of the year marking the [...]
  • 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 involve the structure/composition of the star, while others may involve extrinsic factors such as a companion star that eclipses a normally relatively stable star periodically.
    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 [...]
  • Interesting Quotes By Albert Einstein
    Astronomy Lists

    Interesting Quotes By Albert Einstein

    Albert Einstein (1879-1955) was the most influential physicist of the 20th century, and was born in Germany to a  Jewish family, although he later became a Swiss citizen (1901) and then a U.S. citizen in [...]
  • List of Best Space and Astronomy Websites
    Astronomy Lists

    List of Best Space and Astronomy Websites

    Although there are millions of websites that deal with astronomy, cosmology, and space in general, many are guilty of disseminating half-truths, distorted truths, or just plain bad science. So where do you start to look [...]

Stargazing

  • Mare Imbrium
    Astronomers use the dates of solstices and equinoxes to delineate the start and end of seasons in a year, and in the Northern Hemisphere, autumn begins with the start of the September equinox, whose dates range from the 21st to 24th. [...]