In this episode of SciShow, Hank Green gives us an inclusive overview of how everything in the universe is thought to have begun, and how cosmologists predict it will all come to an end. Now get happy!
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Hank Green of SciShow summarizes the five reasons why infrared telescopes were supposed to be impossible to build, and then describes how a team of scientists and engineers overcame those obstacles to build the James Webb Space Telescope.
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Not only is the universe expanding, but the rate of expansion keeps accelerating. Hank Green from the SciShow says we can blame, or thank, dark energy — the most mysterious force in the universe — for this phenomenon. Thought to make up more than 70 percent of the energy in the whole universe, Hank describes how dark energy was theorized to exist and how scientists are trying to explain it.
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In this episode of SciShow, Hank Green reports on the discovery by NASA scientists of the most distant, oldest galaxy ever observed.
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Far out in space, in the center of a seething cosmic maelstrom. Extreme heat. High velocities. Atoms tear, and space literally buckles. Photons fly out across the universe, energized to the limits found in nature.
What can we learn by witnessing the violent birth of a black hole? Watch for the full episode, coming soon to Cosmic Journeys.
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In this edition of the SciShow, Hank Green brings us news of a unique astronomical discovery — a rogue planet. He also allays our fears of an apocalyptic collision with Earth. So, this new planet is awesome, but it needs a different name. CFBDSIR J214947.2-040308.9 isn’t really cutting it. Suggestions?
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All the stars in a spiral galaxy rotate around a center — but to astronomers, the speed that each star travels wasn’t making sense. Why didn’t stars slow down toward the edges as expected? Don Lincoln explains how a mysterious force called dark matter is (possibly) the answer — and why the search for an answer matters. Lincoln is a particle physics researcher at Fermi National Accelerator Laboratory and adjunct physics professor at the University of Notre Dame.
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Out of billions of galaxies and billions of stars, how do we find Earth-like habitable worlds? What is essential to support life as we know it? Ariel Anbar provides a checklist for finding life on other planets. Anbar is a biogeochemist in the School of Earth & Space Exploration at Arizona State University in Tempe, Ariz.
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Aerospace Engineer Rand Simberg talks about the future of space flight under the next president. Find out why President Obama has had one of the best space policies of the past 40 years. Plus, what can we expect under a Romney administration? Will commercial space flight save space? Find out on this episode of PJTV’s InstaVision with Glenn Reynolds.
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How could we save the planet if an asteroid was careening toward Earth? Nuke the rogue Earth-crosser? How about bombarding the asteroid with millions of paintballs? That’s actually a legitimate option, or at least one being considered by the United Nations’ Space Generation Advisory Council and explored in this edition of SourceFed.
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