Catalog Search Results
Pub. Date
2017.
Language
English
Description
Have you ever looked up to Orion on a dark winter's night and noticed a fuzzy patch near the center of the constellation? You're looking at the Orion nebula, a "nursery" where stars are born every year. Learn why ionization occurs in these H II regions and how this hot plasma produces some of the most beautiful objects in the sky.
Pub. Date
2013.
Language
English
Description
How do you make a planet? Look at what is currently known about the process by which our solar system's planets formed from billions of small planetesimals, as well as how this process left the universe teaming with asteroids and comets that play an important role in life on Earth.
Pub. Date
2017.
Language
English
Description
Radio source counts have led to great discoveries about the universe, even though each individual radio source isn't fully understood. Between massive black holes and starbursts, scientists relying in part on astronomical surveys now believe galaxies can have different evolutionary tracks and histories. And the universe itself? It seems to be not only evolving, but evolving through stages.
Pub. Date
2023.
Language
English
Description
Travel to the most exotic sector of the Milky Way, the galactic center, which has a black hole four million times more massive than the sun and is orbited by hot gas and giant stars. View this violent region at multiple wavelengths using the most advanced telescopes of our day.
Pub. Date
2023.
Language
English
Description
Use the sharp eye of the Hubble Space Telescope to survey some of the most peculiar galaxies in the local universe. Focus on Hoag's Object, a ring galaxy with a yellow nucleus, surrounded by a nearly perfect circle of hot blue stars. Explore competing ideas for the origin of this unique structure.
Pub. Date
2013.
Language
English
Description
After 50 years of SETI, we have zero hard evidence of alien civilizations, "cosmic wanderlust" resulting in Earth visitations, or UFOs being extraterrestrial in nature, despite - or perhaps because of - the expansiveness of the galaxy. Speculate on reasons for, and solutions to, this so-called Fermi Paradox.
Pub. Date
2017.
Language
English
Description
When radio astronomers discovered a sky full of small radio sources of unknown origin, they built telescopes using multiple antennas to try to understand them. Learn how and why interferometers were developed and how they have helped astronomers study quasars - those bright, star-like objects that scientists now know only occur in galaxies whose gas is falling into a supermassive black hole.
Pub. Date
2017.
Language
English
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
2023.
Language
English
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
2015.
Language
English
Description
As recently as 1990, it seemed plausible that the solar system was a unique phenomenon in our galaxy. Thanks to advances in technology and clever new uses of existing data, now we know that planetary systems and possibly even a new Earth can be found throughout galaxies near and far. We are living during a new golden age of planetary discovery, with the prospect of finding many worlds like Earth. Most of the thousands of planets we've detected can't...
Pub. Date
2017.
Language
English
Description
In 1901, divers off a Greek island discovered a corroded bronze artifact composed of interlocking gears. Later analysis and X-ray imaging show it is an astonishingly versatile astronomical computer. Professor Schaefer identifies a probable date when it was built and two likely candidates for its brilliant designer.
72) Lava Worlds
Pub. Date
2015.
Language
English
Description
Explore the theoretical limit of the smallest possible orbit for a planet, taking into consideration tidal stresses and other destructive processes. Then focus on Professor Winn's search for such objects, which found probable lava worlds-planets heated to rock-melting temperatures by their extreme closeness to their host stars..
Pub. Date
2013.
Language
English
Description
Continue traveling to the cold gas giant Saturn and its large moon, Titan. Watch a video featuring actual data taken by the Huygens Probe as it pierces the thick atmosphere and lands on the surface of this frozen world, and witness the surprising Earth-like structures this probe and its mother ship found on their journey to Saturn's moons.
Pub. Date
2023.
Language
English
Description
Prepare for your cosmic journey by surveying NASA's space exploration strategy. Although human spaceflight gets the lion's share of publicity, the greatest scientific discoveries in space are the work of planetary probes and space observatories. Learn why this approach has paid off so spectacularly.
Pub. Date
2023.
Language
English
Description
Travel to some of the most distant and luminous objects in the universe: quasars. Discovered in the early 1960s, these active galaxies are associated with matter-devouring supermassive black holes. Investigate the brightest and first-found quasar, called 3C 273, and learn what it reveals about the early universe.
Pub. Date
2023.
Language
English
Description
Study fossil remains of the early solar system, preserved in the rocky debris of the asteroid belt between Mars and Jupiter. Focus on one of the largest asteroids, Vesta, viewing it close up via the Dawn spacecraft. Learn how pieces of Vesta have fallen to Earth as meteorites.
Pub. Date
2017.
Language
English
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.
Pub. Date
2023.
Language
English
Description
Investigate the nearby Andromeda galaxy, tracing its puzzling spiral arms. Use images from the Galaxy Evolution Explorer and other telescopes to gather evidence that something once crashed into Andromeda. Then chart Andromeda's collision course with our own galaxy!
Pub. Date
2015.
Language
English
Description
Learn how a sensitive new instrument led the way in finding planets smaller than the Jupiter-sized giants that dominated the earliest exoplanetary discoveries. Halfway in size between Earth and Neptune, these worlds have uncertain properties. For clues about their nature, consider how our solar system formed..
Pub. Date
2015.
Language
English
Description
The standard theory of planet formation is based on our solar system. But does this view require revision based on the existence of misplaced giant planets-hot Jupiters circling close to their parent stars? Compare competing theories that try to resolve this conflict..
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