Tag Archives: international space station

Study shows how planetary building blocks evolved from porous to hard objects

Thinking small has enabled an international team of scientists to gain new insight into the evolution of planetary building blocks in the early solar system.

The researchers compared the results of small-scale numerical simulations of colliding rock and dust particles to the composition of meteorites. They found that collisions helped transform initially porous materials into the more highly solidified asteroids and meteorites observed today. The team of seven scientists published their evidence last month in Nature Communications. (more…)

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International Space Station to Beam Video via Laser Back to Earth

A team of about 20 working at NASA’s Jet Propulsion Laboratory in Pasadena, Calif., through the lab’s Phaeton early-career-hire program, led the development of the Optical Payload for Lasercomm Science (OPALS) investigation, which is preparing for an April 14 launch to the International Space Station aboard the SpaceX-3 mission. The goal? NASA’s first optical communication experiment on the orbital laboratory.

Scientific instruments used in space missions increasingly require higher communication rates to transmit gathered data back to Earth or to support high-data-rate applications, like high-definition video streams. Optical communications-also referred to as “lasercom”-is an emerging technology where data is sent via laser beams. This offers the promise of much higher data rates than what is achievable with current radio frequency (RF) transmissions and has the advantage that it operates in a frequency band that is currently unregulated by the Federal Communications Commission. (more…)

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NASA Set for a Big Year in Earth Science

For the first time in more than a decade, five NASA Earth science missions will be launched into space in the same year, opening new and improved remote eyes to monitor our changing planet.

The five launches, including two to the International Space Station (ISS), are part of an active year for NASA Earth science researchers, who also will conduct airborne campaigns to the poles and hurricanes, develop advanced sensor technologies, and use satellite data and analytical tools to improve natural hazard and climate change preparedness. (more…)

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Watching Earth’s Winds, On a Shoestring

Built with spare parts and without a moment to spare, the International Space Station (ISS)-RapidScat isn’t your average NASA Earth science mission.

Short for Rapid Scatterometer, ISS-RapidScat will monitor ocean winds from the vantage point of the space station . It will join a handful of other satellite scatterometer missions that make essential measurements used to support weather and marine forecasting, including the tracking of storms and hurricanes. It will also help improve our understanding of how interactions between Earth’s ocean and atmosphere influence our climate. (more…)

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Orbiting astronaut controls robot on Earth, testing feasibility of CU-Boulder project on far side of the moon

An astronaut orbiting Earth in the International Space Station has remotely directed a NASA rover in California to unfurl an “antenna film” that scientists at the University of Colorado Boulder are developing for use on the unexplored far side of the moon.

When astronaut Chris Cassidy used a Space Station computer to pilot the robot across a mock lunar surface at NASA’s Ames Research Center on June 17, he demonstrated for the first time that an astronaut in an orbiting spacecraft could successfully control a robot in real time on a planetary surface. The technique could have future applications for humans visiting Mars, an asteroid or the moon. (more…)

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A Long Distance Call: Astronaut’s Kids See Dad’s Office from Ladd

Space Station Commander Kevin Ford exchanged Valentine’s Day greetings with his adult kids Heidi and Anthony — he speeding by about 220 miles above Providence and they watching him fly past from Brown’s Ladd Observatory.

PROVIDENCE, R.I. [Brown University] — Rhode Islanders with their eyes skyward around 6 p.m. last Thursday might have noticed a curiously bright speck speeding across the evening sky. No, it wasn’t a UFO or an asteroid. It was the International Space Station, and for Providence resident Heidi Ford, it was dad’s office.

Heidi’s father Kevin Ford is currently the commander of the ISS. And with the help of Brown’s Ladd Observatory and astronomer Robert Horton, Heidi and her brother Anthony, who was visiting from Houston, got to see last week’s flyby close up while they talked to their dad on the phone. (more…)

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Small Asteroid to Whiz Past Earth Safely

The small near-Earth asteroid 2012 DA14 will pass very close to Earth on February 15, so close that it will pass inside the ring of geosynchronous weather and communications satellites. NASA’s Near-Earth Object Program Office can accurately predict the asteroid’s path with the observations obtained, and it is therefore known that there is no chance that the asteroid might be on a collision course with Earth. Nevertheless, the flyby will provide a unique opportunity for researchers to study a near-Earth object up close.

Asteroid 2012 DA14 will be closest to Earth on Feb. 15, at about 11:24 p.m. PST (2 p.m. EST and 1924 UT), when it will be at a distance of about 27,700 kilometers (17,200 miles) above Earth’s surface. Although this is close enough for the asteroid to pass inside the ring of geosynchronous satellites, located about 35,800 kilometers (22,200 miles) above the equator, it will still be well above the vast majority of satellites, including the International Space Station. At its closest, the asteroid will be only about 1/13th of the distance to the moon. The asteroid will fly by our planet quite rapidly, at a speed of about 17,400 mph (7.8 kilometers per second) in a south-to-north direction with respect to Earth. (more…)

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