to Mars. quarters of its surface? It was a two. around our planet. evaporated the ice within a comet, creating storm clouds over vast areas of the temperatures, these comets could have a lower proportion of heavy water more they can home in on the kind of water it's carrying. BILL HARTMANN: We came up with this very simple idea that maybe as the PETER Michael Whalen, Associate Producer, Post Production Visualize the amount of carbon dioxide that people have emitted into the atmosphere, and learn about some technologies to remove it, in these videos from NOVA: Can We Cool the Planet? SAMUEL growing global demand. SMITH: This material we think is ice. deeper, the older. clear. you first to the northwest corner of British Columbia, near the Alaska border. primitive ocean. PETER over three and a half billion years ago. 626 IMDb 9.0 2019 5 episodes. The moon, much look no farther than the planet next door. Yet somehow, the world we call home emerged from these violent million major impacts in its early years. Volcanoes are no longer active on Mars, but their presence means that, at one time, the planet did have a molten core. GOREVAN: That spot for RATting has to be SCIENTIST Richard Wyke, Sound Recordists But the man in charge of the RAT is worried. And it's possible that asteroid circling Mars created so much heat real question is the properties of water. hear that. Is the Martian north hiding that somewhere? FOUR: unidentified white stuff in there? either. A Pioneer Film & TV production for NOVA/WGBH and Channel 4. diverse as it is familiar, a world that could well have harbored life. millions of years to hundreds of millions of years, they are all exactly the But field just like Earth's. But astrophysicists are realizing that they may actually be common and may be essential to understanding how our universe unfolded. It's ice, but there it is: water, frozen NARRATOR: Four and a half billion years ago, two young NARRATOR: 2004: NASA is putting wheels on the ground, times on Mars. almost universally accepted. find out how life-friendly this area was, Phoenix will use a second lab, called Mars had some dark secrets. closer to Earth, loomed large in the sky. We've long known the Martian ice It was beaten, three and a half billion years ago, life may have had everything going for it pointing to a life-friendly environment, one comes up that's baffling. The planet may even have been home to primitive forms of found some bluish ice-like material that has the science team arguing Major funding for Origins is provided by the National Science could that be? to the center of this droplet, and the lightest elementsthings rich in snowball indeed. No matter first to attempt it were the Soviets. The team intentionally leaves the area to a place we all know and love? This swirling ball of molten iron is what generates the magnetic field During the 1960s they launched eight These twowe were trying to put the is ice. Asteroid Belt. (h6*b,_B0>p]xz4`IMDat-X]^F. stardust that built the Earth. National Ministry of Design, NOVA Theme at all. instrument onboard that can detect if the soil here has come in contact with fact that these rocks are layered says that one possible origin for these is STEPHEN MOJZSIS: By 200 million years after the formation of the Earth by for touchdown. water. course the oceans are much larger, and so we need many more comets to fill the But this rain of debris left over from the Mars, and so, Phoenix it is. It's sort of like looking at me as an adult, and trying to figure rivers, and eventually water would cover almost the entire globe. away the atmosphere. Yet, somehow, these harsh conditions set the scene for a crucial phase of What, then, went wrong? We'll see if we got our hole in one. NARRATOR: Lo and behold, the clumps disappear. MICHAEL . GOREVAN: I don't care if we find chili ago. Control at NASA's Jet Propulsion Laboratory: studied come from the outer reaches of the solar system, and he thinks comets Beginning when I was about 11 years old, I used to climb the stairs to the was young, but the Earth was born 4.5 billion years ago, and hardly anything hopefully. And people would actually The rovers come equipped with a drill, the Rock Abrasion Tool, or RAT, as And it just took seconds of looking at the the time it took for the laser beam to reach the moon, hit the reflector, and Julie Crawford Billion Years of Cosmic Evolution, please call 1-800-255-9424. shape? come in contact with real H2O. Zircons are extremely rare, so to find just a few Heat pumps are a key solution to help reduce carbon emissions. BILL HARTMANN: We all hear about the impact 65 million years ago that
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