• Solar System
    Astronomy History

    10 Interesting Heliocentric Solar System Quotes

    Heliocentrism is the astronomical model which places a stationary Sun at the center of the Solar System while the Earth, planets and other bodies revolve around it. As early as the 3rd century BCE, Greek [...]
  • Fox Fur Nebula in Monoceros
    Astronomy Lists

    Nebulae Named After Land Animals

    Nebulae are vast regions of interstellar dust and ionized gases which form stars due to a process called gravitational accretion. This whole turbulent and complex process results in unusual and exotic gas shapes being formed, [...]
  • 5 Bizarre Paradoxes Of Time Travel Explained
    Astronomy Lists

    5 Bizarre Paradoxes Of Time Travel Explained

    There is nothing in Einstein’s theories of relativity to rule out time travel, although the very notion of traveling to the past violates one of the most fundamental premises of physics, that of causality. With [...]
  • Books 2
    Astronomy Lists

    20 Recommended Astronomy Books

    There are thousands of internet resources that serve the interests of the majority of most amateur astronomers most of the time. However, some types of information can only be obtained from old-style paper books. It [...]
  • 10 Interesting Facts About Black Holes
    Astronomy Lists

    Top 10 Facts About Black Holes

    Of all the strange objects that exist in the Universe, black holes are without doubt the strangest. Before 1971, black holes were believed to be purely theoretical phenomena, but this perception was radically altered after [...]
  • 10 Interesting Facts about Red Giant Stars
    Astronomy Lists

    10 Interesting Facts about Red Giant Stars

    While red giant stars are among the biggest stars in the Universe, they were not born that way. Red giants are for the most part normal main-sequence stars that have exhausted their supply of hydrogen, [...]
  • Orion
    Astronomy Lists

    Top 10 Night Sky Objects for Amateur Astronomers

    Although there are thousands of astronomical objects worth observing in the night sky, all astronomers, both amateur and professional alike, will tell you that they have their own personal favorites. These might include lingering early [...]
  • 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 [...]