1. brunda1

    Looking for study buddy to study AP physics

    Studying basic physics concepts
  2. Coursera

    Coursera Astro 101: Black Holes

    Overview What is a black hole? Do they really exist? How do they form? How are they related to stars? What would happen if you fell into one? How do you see a black hole if they emit no light? What’s the difference between a black hole and a really dark star? Could a particle accelerator create...
  3. edX

    edX Greatest Unsolved Mysteries of the Universe

    Overview Despite spectacular recent progress, there is still a lot we don't know about our universe. We don't know why the Big Bang happened. We don't know what most of the universe is made of. We don't know whether there is life in space. We don't know how planets form, how black holes get so...
  4. edX

    edX Astrophysics: Exploring Exoplanets

    Overview The discovery of exoplanets is one of the greatest revolutions in modern astrophysics. Twenty years ago, we had no idea whether any of the countless stars out there beyond our solar system had planets or not. Today, things are totally different. Over 1,000 planetary systems have been...
  5. edX

    edX Astrophysics: The Violent Universe

    Overview Interested in exploring the deadliest and most mysterious parts of our universe? Or, investigating black holes, which warp the very fabric of space-time around them? We will look at what we know about these objects, and also at the many unsolved mysteries that surround them. We will...
  6. edX

    edX Astrophysics: Cosmology

    Overview This course covers cosmology – the study of our entire universe. Where did the universe come from? How will it end? What is the nature of space and time? For the first time in human history, we can give precise, reliable answers to many cosmological questions, thanks to a spectacular...
  7. edX

    edX Cosmic Rays, Dark Matter, and the Mysteries of the Universe

    Overview In the Universe, high-energy cosmic rays are violently propagating in space. While we know these cosmic rays come from outside of the solar system, exactly how and where they originate is a mystery. Professor Shoji Torii from Waseda University and many researchers from around the...