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Recent Articles
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Topic: Photons
NASA’s Ice, Cloud and land Elevation Satellite-2 (ICESat-2) will measure the average annual elevation change of land ice covering Greenland and Antarctica to within the width of a pencil, capturing 60,000 measurements every second. ![]() NASA’s Ice, Cloud and land Elevation Satellite-2 (ICESat-2) spacecraft arrives at the Astrotech Space Operations facility at Vandenberg Air Force Base in California ahead of its scheduled launch on Sept. 15, 2018. (U.S. Air Force/Vanessa Valentine) «Read the rest of this article» Sections: Technology | No Comments
NASA Satellites observe Plant Life on Earth’s Land and OceansWritten by Lacey Young
During the week of November 13th-17th, NASA is sharing stories and videos about how this view of life from space is furthering knowledge of our home planet and the search for life on other worlds. ![]() New NASA missions will study terrestrial vegetation, such as these trees along the Kuskokwim River near McGrath, Alaska. (NASA/Peter Griffith) «Read the rest of this article» Sections: Technology | No Comments
NASA’s Psyche Mission utilizes Photons to increase Space Communications Performance and EfficiencyNASA Headquarters
The Deep Space Optical Communications (DSOC) package aboard NASA’s Psyche mission utilizes photons — the fundamental particle of visible light — to transmit more data in a given amount of time. The DSOC goal is to increase spacecraft communications performance and efficiency by 10 to 100 times over conventional means, all without increasing the mission burden in mass, volume, power and/or spectrum. ![]() Artist’s concept of the Psyche spacecraft, which will conduct a direct exploration of an asteroid thought to be a stripped planetary core. (SSL/ASU/P. Rubin/NASA/JPL-Caltech) «Read the rest of this article» Sections: Technology | No Comments
NASA says Quantum Teleportation could one day be used to create a Quantum InternetWritten by Andrew Good
The science behind these feats is complicated, and until recently, didn’t exist outside of lab settings. But that’s changing: researchers have begun to implement quantum teleportation in real-world contexts. Being able to do so just might revolutionize modern phone and Internet communications, leading to highly secure, encrypted messaging. ![]() New study tests quantum teleportation in a city’s fiber network for the first time. (Félix Bussières/University of Geneva) «Read the rest of this article» Sections: Technology | No Comments
NASA’s Alice instrument aboard Rosetta spacecraft makes discovery on Comet 67P/Churyumov-GerasimenkoWritten by DC Agle
“The discovery we’re reporting is quite unexpected,” said Alan Stern, principal investigator for the Alice instrument at the Southwest Research Institute (SwRI) in Boulder, Colorado. “It shows us the value of going to comets to observe them up close, since this discovery simply could not have been made from Earth or Earth orbit with any existing or planned observatory. And, it is fundamentally transforming our knowledge of comets.” ![]() This composite is a mosaic comprising four individual NAVCAM images taken from 19 miles (31 kilometers) from the center of comet 67P/Churyumov-Gerasimenko on Nov. 20, 2014. (ESA/Rosetta/NAVCAM) «Read the rest of this article» Sections: Technology | No Comments
NASA answers the question, “Is There an Atmosphere on the Moon?”Written by Brian Day
Just as the discovery of water on the moon transformed our textbook knowledge of Earth’s nearest celestial neighbor, recent studies confirm that our moon does indeed have an atmosphere consisting of some unusual gases, including sodium and potassium, which are not found in the atmospheres of Earth, Mars or Venus. It’s an infinitesimal amount of air when compared to Earth’s atmosphere. ![]() The Lunar Atmospheric Composition Experiment (LACE) deployment during the Apollo 17 mission. (Image credit: NASA) «Read the rest of this article» Sections: Technology | No Comments
Source of NASA’s Pioneer 10 and 11 Spacecrafts unexplained deceleration found to be Heat related in new StudyWritten by Jia-Rui C. Cook
The heat emanates from electrical current flowing through instruments and the thermoelectric power supply. The results were published on June 12th in the journal Physical Review Letters. “The effect is something like when you’re driving a car and the photons from your headlights are pushing you backward,” said Slava Turyshev, the paper’s lead author at NASA’s Jet Propulsion Laboratory, Pasadena, CA. “It is very subtle.” ![]() An artist’s view of a Pioneer spacecraft heading into interstellar space. Both Pioneer 10 and 11 are on trajectories that will eventually take them out of our solar system. (Image credit: NASA) «Read the rest of this article» Sections: Technology | No Comments
NASA’s Fermi Gamma-ray Space Telescope is finding Mysterious Objects at the Edge of the Electromagnetic SpectrumWritten by Dauna Coulter
Outside the realm of human vision is an entire electromagnetic spectrum of wonders. Each type of light–from radio waves to gamma-rays–reveals something unique about the universe. Some wavelengths are best for studying black holes; others reveal newborn stars and planets; while others illuminate the earliest years of cosmic history.
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