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Using crisp images and lifelike animations, this program introduces students to the intriguing realm of stars and galaxies. The main characteristics of galaxies and stars are discussed. Special attention is given to the features of stars, including size, temperature, and brightness. The life cycle of a star is also highlighted, as are the tools used by astronomers to study space. Additional concepts and terminology illustrated in the video include: universe, telescope, satellites, constellations, star color, spectrum, gas, light-year, and black hole.
(Source: DCMP)
Who are the biggest super stars in the universe? For Adam Burrows, an astrophysics professor at Princeton University, it's not who, but "what," and they are far from Hollywood, or even Earth, for that matter. Burrows reveals that the biggest super stars are the stars that die in a massive explosion called a "supernova." With support from the National Science Foundation, Burrows investigates supernovae, and he has recently created 3D computer simulations showing the actual moment of a star's death. His simulations are revealing more about these stellar performances.
Gravity rules the life cycle of stars. During the Red Giant dying stage in the life of an average size star, its outer layers are blown off in vast clouds of dust and gas called "nebulae" that contain hydrogen, oxygen, and nitrogen. Gravity crushes the remaining atoms into a remnant core called a white dwarf. The gravity of giant stars-10 to 20 times larger than average-will, at the end of their life in a supernova explosion, crush together even mutually repulsive protons and electrons, leaving a remnant rotating core of neutrons (i.e., a pulsar). Also explains how stars 20 to 100 times average size collapse into a core so dense that its gravity doesn't even allow light to escape (i.e., a black hole).
Discover how the James Webb Space Telescope will help scientists studying the formation of stars. The telescope will provide infrared observations and give astronomers an unprecedented view of stellar birth. Computer models show how a giant cloud of gas and dust collapses to form stars and planets.
Depicts the different stages in the birth and death of stars, including the sun. There are 100 billion stars in the Milky Way galaxy alone, and there are 100 billion galaxies. Provides an overview of radiated energy, which is in all wavelengths; nuclear fusion; and fierce magnetic fields, which create all solar events. Explains that the length of a star's life and how it dies are determined by gravity and how gravity is proportional to size.
What are stars, and where do they come from? Briefly discusses the life cycle of a star, their colors, and super nova. Includes the Hubble Space Telescope, how stars were used in history, and constellations. Offers a short review.
Moko is an explorer. As he travels the world continent by continent, he makes many friends and discovers many natural phenomena which sometimes delight him, and other times scare him. Each animated episode recounts an adventure and takes an "original story" approach to explaining these natural phenomena. In this episode, when Moko sees a shooting star zip right over the mountaintops, he wonders whether there isn't someone over there making stars. He goes to the mountain and finds a woman tending a huge fire. Thousands of sparks fly out of the fire and rise, twinkling, into the sky. He thinks he has discovered the secret of the star sprinkler.
Visible light, which can be seen with human eyes, comprises a small sliver of the electromagnetic spectrum. The rest of the spectrum, from short wavelength gamma rays to long-wavelength radio waves, requires special instruments to detect. ALMA uses an array of radio telescopes to detect and study radio waves from space. ALMA is an advanced tool for studying very old stars and galaxies. These objects now are seen at great cosmic distances, with most of their light stretched out to millimeter and sub-millimeter wavelengths by the expansion of the universe. ALMA provides the unprecedented ability to study the processes of star and planet formation.
Students investigate properties of the Sun. Special attention is given to other celestial bodies in space such as asteroids and comets.
In this episode, scientist Steve Lord discusses the findings of astronomer Edmond Halley, and his discoveries related to the movement of stars. Halley used ancient Greek records to prove that stars move as they orbit within their galaxies. Part of the "Ask an Astronomer" series.
In this episode, Dr. Michelle Thaller explains the molecular makeup of space. She discusses "interstellar medium," which is what is found between stars. Part of the "Ask an Astronomer" series.
The Magic School Bus is an award winning animated children’s television series based on the book series of the same title by Joanna Cole and Bruce Degen. It is notable for its use of celebrity talent and being both highly entertaining and educational. When the kids see Horace Scope on the Star Shopping Network, they decide to buy Dorothy Ann a real twinkling star for her birthday. Before buying it, the kids blast off in the Bus to inspect the merchandise. They visit a young star, and then a middle-aged star, and then an old star. They decide to buy the old star. But when they give Horace their money, the star explodes. Have they lost D.A.'s star forever?
The engineers at NASA are studying two new technologies to help image distant Earth-like planets. Coronagraphs are tiny instruments fitted inside telescopes to block light and help scientists study clues as to whether life is present on a planet. Starshades also block light and produce clearer photographs of distant planets. Both of these technologies are used with telescopes and provide scientists with enhanced photographs of space. Part of the “Crazy Engineering” series.
Dr. Michelle Thaller explains the relationship between visible light and the principle of black-body radiation. These two aspects along with the anatomy of the human eye explain why stars don't appear green in the night sky. Part of the "Ask an Astronomer" series.
It never gets dark anymore. Light pollution is not only making it more difficult to see the night sky, but it's also affecting human health. For the past century and a half, since the dawn of electric light, humans have been losing their connection to the night. In this episode, host Joe Hanson travels to McDonald Observatory in Texas, one of the darkest places in North America, to learn what people are doing in order to preserve dark skies. Part of the "It's Okay to Be Smart" series.
Part of the "Branches on the Tree of Life" series. Echinoderms are one branch of the deuterostome line of animal evolution, the branch to which Chordates also belong. Covers phylum characteristics and key biological details for five classes: sea stars, brittle stars and basket stars, sea urchins and sand dollars (including developmental stages), sea cucumbers, and crinoids (feather stars).
Scientists learn the basic properties of stars by analyzing the light they emit. Clarifies how brightness and luminosity are determined, discusses stellar parallax, and explains star color and characteristics. Focuses on yellow, blue, and red stars, white dwarfs, red giants, black holes, and supernovae.
In this episode, scientists discuss the W5 star-forming region. Through the use of infrared light, they show areas within the region where new stars are being formed. Part of the "Ask an Astronomer" series.
Shares a broad look at stars--their formation, life, and types of death. Mentions red giants, blue stars, supernovas, red dwarfs, black holes, and others. Notes that astronomers study a star's light to learn about it. Projects what will happen to our star, the sun.
Host Trace Dominguez sets out to discover how elements are formed. He elicits help from Dr. Ian O'Neill. During their conversation, they discuss the role that stars play in creating heavy elements throughout the universe.
