Catalog Search Results
Pub. Date
2013.
Description
Delve into the Late Heavy Bombardment period that kept Earth stuck in a lifeless state for 650 million years, then watch an animation demonstrating the K-T impact event that wiped out the dinosaurs. Consider whether it's possible to protect ourselves from asteroids hurtling toward Earth - and why Hollywood gets it all wrong.
Pub. Date
2013.
Description
Gas giant Jupiter is unlikely to inhabit life - but what about its moons? Look quickly at the importance that Galileo's discovery of Jupiter's moons had for the powerful Medici family before moving on to examine the connection between the moons' mean motion resonance and the possibility of subsurface life existing in the ice-covered oceans of Europa, Ganymede, and possibly, Callisto.
Pub. Date
2017.
Description
Learn to operate the Antikythera mechanism, the glory of ancient astronomy. Modern models show how a simple turn of the crank could reveal the day of the year, phase of the Moon, possible eFilmclipse dates, the cycles of ancient games, and other information. Probe the historical impact of this device.
Pub. Date
2017.
Description
Consider the astronomy-based world views of different ancient cultures and how they answered the three big questions: Where did the world come from? What is the nature of the universe? What is its fate? Survey the beliefs of the Greeks, Chinese, Australian aborigines, and other groups, seeking common elements.
Pub. Date
2017.
Description
The genius of Greek astronomy is epitomized by the star catalogs of Hipparchus and Ptolemy. Professor Schaefer recounts his exciting discovery of a star chart apparently influenced by Hipparchus's lost catalog. Close by comparing Greek star catalogs with those of China and the Arab world.
Pub. Date
2015.
Description
Given the extreme faintness of a planet relative to the star it orbits, how can astronomers possibly find it? Learn about direct and indirect methods of detection. As an example of the indirect method, discover why a planet causes a star’s position to change, providing a strategy for locating exoplanets without seeing them..
Pub. Date
2013.
Description
Venus is the closest planet to the Earth and the next planet moving toward the sun, so it is a logical place to look for life. However, Venus is extremely hot and dry. Could life ever have existed? Explore the nightmarish conditions on Venus and learn why all the water vanished.
Pub. Date
2013.
Description
Mars ranks as NASA's number one priority in the search for exolife. Here, you delve into why Mars is so intriguing to astrobiologists and what the search has found to date. Start with a comparison of Mars and the Earth, then watch the first-ever observation of water ice on Mars sublimating into vapor.
Pub. Date
2023.
Description
Conclude your cosmic tour by probing the echo of creation: the faint afterglow of the big bang, which is present everywhere in space. View this signal in increasing detail provided by spacecraft, and uncover its astonishing story about the earliest epoch of our vast universe.
Pub. Date
2013.
Description
Terraforming is a new scientific concept whereby an uninhabitable planetary environment is engineered to become more Earth-like to support human life. Explore how this complex process would play out on the two planets considered potential candidates, Mars and Venus, to fully understand the individual steps involved and the technologies necessary to achieve those steps.
Pub. Date
2013.
Description
Are we alone in the universe? Or does the cosmos pulse with diverse life forms? Life in Our Universe reveals the cutting-edge research leading scientists to believe that life is not exclusively the domain of Earth. Taught by an award-winning professor of astronomy and astrophysics, these 24 stunningly visual lectures offer an unparalleled look at some of the universe's most vexing dilemmas.
Pub. Date
2013.
Description
Now that you have covered the key elements necessary for life to exist, take a closer look at the things all life on Earth shares. Learn why the Biosphere 2 experiment in the 1990s failed, examine the behavior of microbes - the most important constituents of our biosphere - and trace life back to your universal ancestor.
Pub. Date
2015.
Description
The most common stars are class M dwarf stars, which are smaller and less luminous than the Sun (class G). Earth-sized planets are much easier to detect around M-dwarf stars, especially if the planets are within the relatively close-in habitable zone. Explore examples and the prospect for life on such worlds..
Pub. Date
2013.
Description
Is our solar system common or rare? As you investigate planets orbiting around other stars, learn how the use of adaptive optics allows extrasolar planetary scientists to discover new alien solar systems with ground telescopes, and explore the three main ways astronomers detect planets: small "radio velocity wobbles," "transits," and direct imaging.
Pub. Date
2017.
Description
Chances are you would agree with astronomers that gravity is the single most important force or event shaping the world as you know it. But the second most important? That would be supernovas, and nothing you know would be here without them. Learn how super-massive stars can explode at the end of their lives, releasing energy that outshines 10 billion Suns.
Pub. Date
2017.
Description
Considered the greatest astronomer of the ancient world, Hipparchus created a thousand-star catalog and discovered precession, the eons-slow rotation of the fixed stars around the eFilmcliptic. Did this remarkable discovery give birth to the Mithraic religion, which rivalled Christianity?
Pub. Date
2017.
Description
At 17 million pounds, and with more than 2,000 surface panels that can be repositioned in real time, this telescope is one of the largest moveable, land-based objects ever built. The dish could contain two side-by-side football fields, but when its panels are brought into focus, the surface has errors no larger than the thickness of a business card. Welcome to this rare insider's view.
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