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The last decade of the 20th Century sets us on course for the next 100 years. With inventions like Global Positioning Satellites and The Hubble Space Telescope, the inventions of the 1990s help us see where we've been and where we're going. Additional inventions include: the wind up radio, camera phone, the Mars Pathfinder, and the neurotropic electrode.
(Source: DCMP)
Mars is actually cold. Mars is about 50 million miles farther away from the Sun than Earth. That means it gets a lot less light and heat to keep it warm. Part of the “Mars in a Minute” series.
Mars definitely has a reddish tint, and even the ancient Egyptians called Mars “The Red One.” Where does the redness come from? The rocks on Mars are full of iron, and the dust from those rocks swirls around the atmosphere, which makes the planet appear red. Part of the “Mars in a Minute” series.
What does it take to get a spacecraft to Mars? Scientists cover a few key things to remember when planning a trip to the Red Planet. Part of the “Mars in a Minute” series.
How does a spacecraft land on Mars as it hurtles towards the planet at thousands of miles per hour? It needs a heat shield to protect it from the friction of entry into the atmosphere. The spacecraft will also need a parachute to help slow down its descent. Part of the “Mars in a Minute” series.
Tour three Martian landscapes and find out how erosion and water has affected the surface of Mars. Flyover images show the structure and composition of the landscape of Mars and focus on Candor Chasma, part of a canyon system of Mars.
NASA engineers are looking for new ways to explore Mars. They are working with a small helicopter that could help scout trails for future explorations into space. Part of the “Crazy Engineering” series.
Mars is the planet in our solar system most similar to Earth. Rumors of life on it may be substantiated as NASA orbiters and rovers discover new evidence of frozen water just beneath the rusty soil. Did alien life exist there? As Earth reels with the effects of global warming, Mars becomes the most likely candidate for eventual human habitation. Cutting-edge computer graphics are used to show what life would be like on Mars, and to imagine what kind of life forms might evolve in alien atmospheres.
Examines the similarities and differences between Mars and Earth. Comments on the size, color, atmosphere, and temperature of Mars. Includes footage from recent missions to Mars and speculates on possible manned space flights to the Red Planet.
Landing a spacecraft on a distant planet is the most difficult part of a mission. Scientists use animation to show how difficult it is to land on Mars. Part of the “Mars in a Minute” series.
In the last few years, the Red Planet has yielded up many new clues that life may have once existed there...and may even exist there today. There is now proof that water once flowed on the surface, that Mars once had lakes, and that the frozen poles are mostly water. Mars has snow--an aurora--and lightning generated by dust storms. Most intriguing of all are the seasonal plumes of methane that just may point to bacteria living below the surface.
The Red Planet, with the most similar environment to Earth in the entire solar system, is a third alternative being explored for colonization. The discovery of ice on its surface has excited and encouraged many space scientists despite the many challenges to establishing a colony on Mars. Part of the "Space Colonies" series.
Before a rover starts exploring a new planet, engineers send computer commands telling it where to go. They can send a string of specific commands, or they can let the rover think on its own. Part of the “Mars in a Minute” series.
About every two years, Earth and Mars wind up on opposite sides of the sun, which can block the signals sent by the rover. During this solar conjunction, scientists must ensure they do not lose any of the data being sent by “Curiosity.” Part of the “Mars in a Minute” series.
Team members at NASA's Jet Propulsion Laboratory share the challenges faced during the final minutes before “Curiosity” landed on the surface of Mars. “Curiosity” is a car-sized robotic rover exploring Gale Crater on Mars as part of NASA’s Mars Science Laboratory mission (MSL).
How do you plot a course to Mars, from one moving planet to another? What are the impacts of space travel on the body and can human beings survive the trip? Looks at the plans for a flight to the Red Planet.
In this episode, host Dianna Cowern interviews planetary geologist Raquel Nuno. They discuss the reasons why Mars is inhabitable for humans. Part of the "Physics Girl" series.
Organics are carbon-based molecules and key ingredients to life. Scientists want to know if organics can be found on Mars. However, finding organics is difficult because they easily break down when exposed to harsh things like extreme radiation and chemical oxidants. These broken down particles give the Martian surface its rusty color. Part of the “Mars in a Minute” series.
Dr. Randall Hughes is interested in what makes a salt marsh less susceptible to disturbances, such as drought. She looks at species diversity to determine what combinations of plants and animals make for a more productive ecosystem. Part of the series "In The Grass, On The Reef."
A quick glance at the marsh next to Saquatucket Harbor in Harwich Port, Massachusetts, reveals right away that some of the grass is missing. The cordgrass there, and all around Cape Cod, has been slowly disappearing for decades. Marine ecologist Mark Bertness of Brown University studies this critical ecosystem, which protects our coastal environment by nurturing a complex web of plants and animals, filtering nutrients, and serving as a critical storm barrier. Bertness says the marshes are being overrun by purple marsh crabs because their main predators, blue crab and finfish, are being overfished. So, the purple marsh crabs are free to gorge on healthy fields of cordgrass and once done feeding, they leave behind nothing but lumpy fields of mud.
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Biology related concepts
A collection containing 59 resources, curated by Benetech
Resources related to vision
A collection containing 12 resources, curated by Charles LaPierre
