Informações:
Sinopsis
Leading science journalists provide a daily minute commentary on some of the most interesting developments in the world of astronomy and space exploration. For a full-length, weekly podcast you can subscribe to Science Talk: The Podcast of Scientific American . To view all of our archived podcasts please go to www.scientificamerican.com/podcast
Episodios
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Texas Teens Take Rocket Title
25/06/2013 Duración: 01minThree teenage Texas model rocketeers beat out teams from France and the U.K. to claim top honors at this year's International Rocketry Competition. John Matson reports
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Primordial Galaxy Shows How to Make a Big One
20/06/2013 Duración: 01minLooking at the Himiko Galaxy as it was just 800 million years after the big bang offers a glimpse at how the most massive galaxies took shape. John Matson reports
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Galaxy of a Thousand Stars
13/06/2013 Duración: 01minSegue 2, one of dozens of "companion" galaxies that orbit the Milky Way, is now the smallest galaxy known. Michael Moyer reports
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Curiosity Reveals Mars Astronaut Radiation Risk
31/05/2013 Duración: 01minA side benefit of NASA's Curiosity rover mission is that we now know about how much radiation an interplanetary traveler would face. John Matson reports
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Earth and Moon Had Same Water Source
28/05/2013 Duración: 01minIsotopic analysis of water trapped in volcanic glass in lunar samples show that the moon has more water than thought, and the water there and on Earth had the same origins. Karen Hopkin reports
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Mars Rover Sets Distance Record
22/05/2013 Duración: 01minAfter nine (Earth) years of slowly traversing Mars, Opportunity broke the U.S. off-world rover record held by Apollo 17's lunar buggy since 1972. John Matson reports.
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Exoplanet Building Blocks Found around White Dwarfs
14/05/2013 Duración: 01minSilicon-rich rocky material was found around white dwarfs in the Hyades star cluster by the Hubble Space Telescope, despite the fact that almost no known planets exist in star clusters. John Matson reports
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Milky Way Makes Small Massive Gain
03/05/2013 Duración: 01minBased on the Milky Way's effect on the motion of a nearby dwarf galaxy, our galaxy seems to have more mass than we previously thought. John Matson reports
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Space Scope Spots 3 Possibly Habitable Planets
22/04/2013 Duración: 01minNASA's orbiting Kepler telescope recently spotted three exoplanets in or near their stars' so-called habitable zones, the temperate region where a planet could accommodate liquid water. John Matson reports
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Amateur Astronomers Spot Missing Russian Mars Lander
15/04/2013 Duración: 01minUsing imagery taken by NASA's Mars Reconnaissance Orbiter in 2007, amateur astronomers located an object that could be a Russian lander that went dark after a few seconds on Mars in 1971. John Matson reports
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Water Ice Found across Saturn System
08/04/2013 Duración: 01minSaturn's rings and moons contain a uniform distribution of water ice, which seems to reflect their common origins billions of years ago. John Matson reports
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Universe May Be a Titch Older
25/03/2013 Duración: 01minNew data from the European Planck satellite indicate that the universe is 13.8 billion years old rather than a mere 13.7 billion years old. John Matson reports
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Unfinished Chile Observatory Makes Starry Discovery
19/03/2013 Duración: 01minAn incomplete version of Chile's ALMA telescope array found that star formation was in full swing earlier than had been thought. John Matson reports
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Nearby Star Came In with the Bang
14/03/2013 Duración: 01minA study of the star HD 140283, only about 190 light-years away from us, finds that it formed in short order after the big bang. John Matson reports
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Third Van Allen Belt Came and Went
05/03/2013 Duración: 01minThe Van Allen Probes recently found a third belt of charged particles circling Earth, which was then destroyed by a solar shock wave. John Matson reports
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Shoo Away Asteroids with a Coat of Paint
26/02/2013 Duración: 01minHeat radiating from an asteroid imparts a tiny push to the rock, meaning that we could subtly steer an asteroid by changing its reflectance. John Matson reports
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Meteor Shocks Russian City
15/02/2013 Duración: 01minThe Russian city of Chelyabinsk was awakened on February 15 when a meteor exploded overhead, with an energy equivalent to about 300 kilotons of TNT
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Curiosity Drills Mars for Answers
12/02/2013 Duración: 01minEven as a few of its sensors cause problems, the Curiosity rover became the first robotic visitor to bore into the Martian surface. John Matson reports
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Past-Prime Star May Still Produce Planets
04/02/2013 Duración: 01minThe star TW Hydrae should be too old to still have planets forming around it, but its gas and dust indicate it still has planetary potential. John Matson reports
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Gamma-Ray Burst Fingered for Carbon 14 Spike in A.D. 774
21/01/2013 Duración: 01minTree-ring data from A.D. 774 show a sudden spike in radioactive carbon 14, pointing to a burst of charged particles or high-energy radiation that struck Earth. A relatively nearby gamma-ray burst could be the culprit. John Matson reports