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Author
Description
"Blast off into space with Ms. Frizzle and explore our solar system. It's out of this world! The magic School bus Presents our Solar System is packed with incredible photographs,amazing facts, and everthing you ever wanted to know about all eight planets, the Sun, comets, meteors, asteroids, and much, much more." -
Description
A pulsar's spin begins with its birth in a supernova and can be altered by transfer of mass from a companion star. Learn how pulsars, these precise interstellar clocks, are used to confirm Einstein's prediction of gravitational waves by observations of a double-neutron-star system, and how we pull the pulsar signal out of the noise.
Description
Taught by Professor Bradley Schaefer of Louisiana State University, this course shows how ancient Egyptians, Greeks, Indians, Chinese, and other cultures saw the sky. You learn how the Sun, Moon, and stars were their clock, calendar, and compass; constellations encoded their mythologies; and the heavens inspired religious and philosophical ideas, laying the foundation for modern science.
Description
The spectacular sights of the cosmos are now as easy to see as the stars above, with these lavishly illustrated episodes produced in partnership with the Smithsonian. Orbit Saturn, search for water and life on Mars, and witness an armada of space telescopes uncovering the secrets of the cosmos. Embark on great voyages of discovery and enjoy a view that's truly out of this world!
Description
Radio telescopes are so large because radio waves contain such a small amount of energy. For example, the signal from a standard cell phone measured one kilometer away is five million billion times stronger than the radio signals received from a bright quasar. Learn how each of these fascinating instruments is designed to meet a specific scientific goal.
Description
In visible light, scientists had described galaxies as "island universes." But since the advent of radio astronomy, we've seen galaxies connected by streams of neutral hydrogen, interacting with and ripping the gasses from each other. Now astronomers have learned hat these strong environmental interactions are not a secondary feature - they are key to a galaxy's basic structure and appearance.
Description
Learn how astronomers use very-long-baseline interferometry (VLBI) with telescopes thousands of miles apart to essentially create a radio telescope as big as the Earth. With VLBI, scientists not only look deep into galactic centers, study cosmic radio sources, and weigh black holes, but also more accurately tell time, study plate tectonics, and more - right here on planet Earth.
Description
Investigate 51 Pegasi b, the first planet detected around a Sun-like star, which shocked astronomers by being roughly the size of Jupiter but in an orbit much closer to its star than Mercury is to the Sun. Probe the strange characteristics of these “hot Jupiters,” which have turned up around many stars..
Description
The Green Bank Observatory is located within the 13,000-acre National Radio Quiet Zone straddling the border of Virginia and West Virginia. Come tour this fascinating facility where astronomers discovered radiation belts around Jupiter, the black hole at the center of our galaxy, and the first known interstellar organic molecule, and began the search for extra-terrestrial life.
Description
Take a tour of our neighboring planets via their radio emissions and learn how scientists infer their temperatures and energy sources. You'll be shocked by the difference between their images in reflected sunlight - the images we're familiar with - and their appearance when we "see" the radio energy they emit on their own.
Description
The Kepler mission is changing everything we know about extrasolar planets. Learn how this supersensitive-imaging instrument works to monitor 157,000 stars continuously for years and what it has uncovered since launching in 2009. But first, review the transit effect created when a parent star crosses its orbiting planet.
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