NASA Rocket to Create Clouds Tomorrow

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It’s not exactly controlling the weather, but it’s surprisingly close: NASA is set to launch a rocket tomorrow, called the Charged Aerosol Release Experiment (CARE), that will create artificial clouds at the outermost layers of Earth’s atmosphere, according to Space.com.

The idea is to create clouds around the rocket’s exhaust particles, in an effort to simulate the natural formation of noctilucent clouds high in the atmosphere. The real clouds are made of ice crystals and usually sit about 50 to 55 miles above Earth; to create the artificial clouds, the rocket will release dust particles a little higher so they can settle down to the right altitude naturally, according to the report.

The launch will occur NASA’s Wallops Flight Factility in Virginia, and is scheduled for Tuesday between 7:30 and 7:57 pm EDT. (Image credit: Space.com/Veres Viktor)

LiveScience: Laser-Propelled Spacecraft Could Happen

Laser_Wikimedia_Commons.jpgWhen we think of spaceships, we usually think of lasers as weapons. But what if they acted as thrusters instead? Beam-powered propulsion could theoretically enable us to build hyper-energetic vehicles powered by lasers and microwaves, according to LiveScience.

The way it works isn’t quite the picture I would have had, of bright red or blue lasers shooting out the back of a spacecraft. Instead, the power would come from energy beamed remotely from a power plant; the energy would then heat up propellant in a lightweight craft (pictured above).

Getting this to actually work on a large scale is unlikely to work, though. Two years ago, a California physicist built a small demonstration photonic laser thruster in a lab that could help fine-tune a satellite’s position. But the move from that to, say, powering an entire spacecraft–or even just doing the same thing again outside of a controlled lab experiment–could prove daunting. Then again, some scientists believe warp drive may be possible someday, so who knows? (Image credit: Wikimedia Commons)

Astronauts Swap Huge Coolant Tank During Spacewalk

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NASA astronauts replaced a coolant tank the size of a small car late Thursday on the International Space Station.

During the course of about six and a half hours, Olivas and Christer Fuglesang spacewalked outside the space station to install the new 1,7–pound ammonia coolant tank, Space.com reports, and stick the old one 1,300-pound one back about shuttle Discovery.

“If you can almost picture someone handing around a Mini Cooper car between the two of them, it’s about the similar weight and mass of the tank they were handing between each other,” said Zeb Scoville, lead spacewalk officer for Discovery’s mission, in the article.

As they did this, the two kept their eyes on a large piece of space junk that came off a 3-year-old European rocket; it turned out to pose no threat to the astronauts or the shuttle, according to the report. (Image credit: NASA TV)

NSF Awards $2 Million to Study Space Weather

Virginia_Tech_Space_Weather.jpgThe National Science Foundation (NSF) has awarded a $2 million grant to researchers at Virginia Tech to build a chain of space weather instrument stations in Antartica, according to NetworkWorld.

The new stations will consist of radar units that hook into the Super Dual Auroral Radar Network, an international project that when combined will give extensive views of the upper atmosphere in both the Arctic and Antarctic regions, according to the report.

The researchers hope to use the stations to better understand how space weather affects satellite performance for GPS, TV reception, and cell phones. In addition, astronauts are vulnerable to energetic radiation at space station altitudes, the report said, and electric power distribution systems can be disrupted by geomagnetic storms. (Image credit: Virginia Tech)

Wildfire Threatens Historic California Observatory

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The Mt. Wilson Observatory, a century-old astronomical compound located on a 5,700-foot-high peak in southern California, has contributed much to our knowledge of stellar evolution and cosmology, providing the first observational evidence backing the Big Bang theory. The aging observatory has survived much adversity, but now faces a new challenge–it is menaced by a wildfire dubbed the “Station Fire,” which has scorched over 85,000 acres in the mountains north of Los Angeles and claimed the lives of two firefighters. Despite the fire’s rapid approach to the mountain, there is hope that this historic observatory may weather this latest threat.

The fire has burned perilously close to Mt. Wilson, which also hosts
more than 2 dozen television and radio broadcast antennas serving the
LA area. The mountaintop has been evacuated, but officials are
optimistic that the work that firefighters put into clearing brush and
dropping fire retardants in the area will pay off. Although the fire is
approaching the mountain from two directions and is expected to reach
it within the next day, the Los Angeles County Fire Department is
hopeful that the observatory and communications towers may pull through
relatively unscathed.

Shuttle Discovery Launches With COLBERT Treadmill

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The space shuttle Discovery launched late Friday night on a mission to the international space station, according to CNN.

The seven astronauts on board will transport and install several new components, including the Leonardo logistics module, as well as the Combined Operational Load Bearing External Resistance Treadmill (COLBERT), named after Stephen Colbert of Comedy Central’s “The Colbert Report.”

Colbert had won an online NASA poll earlier in the year to name the newest compartment of the space station, but eventually compromised to give the name to the treadmill. The compartment ended up being named Tranquility. (Image credit: NASA)

Giant Suicidal Exoplanet Discovered

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Look out below: astronomers have discovered that a giant, fiery exoplanet called WASP-18b appears locked in a death spiral with its star.

The planet is about 10 times the size of Jupiter and appears to be very close to its star, according to the Associated Press. WASP-18 is so large that it’s triggering huge plasma tides on the star’s surface, the report said–which in turn are distorting the planet’s orbit. Even crazier: the planet orbits the star in less than one day.

Planet discovered Coel Hellier predicts in the article that within the next million years, the planet will spiral right into the star–which should be good for some spectacular fireworks.  “It’s causing its own destruction by creating these tides,” Hellier said.

Like most exoplanets, astronomers discovered WASP-18 by monitoring variations in light from its star whenever the planet crossed in front of it. (Image credit: CARREAU/ESA/Nature)

NASAs LCROSS Moon Mission Runs Into Trouble

NASA_LCROSS.jpgA $79 million portion of NASA’s mission to the moon has run into trouble, after a crisis Saturday caused the agency’s lunar impactor spacecraft to burn through over half of its remaining propellant, Spaceflight Now reports. The anomaly occurred when the craft wasn’t in view from Earth, so it continued unnoticed for some time before ground-based antenna picked it up again.

Dan Andrews, the project manager for the Lunar Carter Observation and Sensing Satellite (LCROSS) craft, said that the probe burned through 309 pounds of maneuvering fuel while attempting to maintain its orientation in space–leaving precious little margin of error for the remainder of the mission.

“Our estimates now are if we pretty much baseline the mission, meaning just accomplish the things that we have to (do) to get the job done with full mission success, we’re still in the black on propellant, but not by a lot,” Andrews said in the report. The group traced the fault to a sensor that measures LCROSS’s attitude, which kicked over to the main star tracking system for backup and then used up more fuel than anticipated in the process. (Image credit: NASA)

Consortium Plans Orbital Commercial Flights

Excalibur_Almaz.jpg“Sub-orbital” commercial space flight? Bah, that’s nothing. According to Slashdot, a new international consortium called Excalibur Almaz Limited plans to launch genuine orbital space flights for commercial purposes, which would represent a significant step ahead of what other groups have already proposed.

The consortium will be a joint effort by the U.S., Russia, and Japan and looks to get underway by 2013. The group plans to use a formerly top-secret Soviet re-entry vehicle, called Almaz, to ferry research crews into orbit around Earth for week-long missions, the report said. For now, this is nothing aside from an announcement of intent, so Mr. Branson can rest easy for now. (Image credit: Excalibur Almaz)

NASA Receives 461GB of Moon Data Each Day

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Hold onto your hard drive: NASA’s Lunar Reconnaissance Orbiter (LRO) has been sending 461 gigabytes of images and other data back home every day, according to Slashdot. Interestingly, it’s using a 100 Mbps data pipe–specifically, a K-band transmitter called the Traveling Wave Tube Amplifier.

It’s a 13-inch long tube that uses electrodes in a vacuum tube to amplify microwave signals, the report said. L-3 Communications Electron Technologies and NASA’s Glenn Research Center built the device in tandem. 100 Mbps doesn’t sound all that impressive on paper, since wired Ethernet has had that for years–until you release the data is traveling almost 240,000 miles. Suddenly FiOS doesn’t seem all that fast.

(Want the latest LRO news and images? Head over to NASA’s dedicated landing page for the Lunar Reconnaissance Orbiter.)