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NASA
GPS satellites tell us where we are, but what tells them where they are?
By Jeff Salton
18:00 November 1, 2009 PST
Global Positioning System (GPS) devices have permeated society to the point where millions of us rely on them daily for directions, locations and traffic avoidance (if only they could tell me where I left my car keys). GPS satellites send signals to a receiver in your handheld or car-based GPS navigator, which calculates your position on the planet based on the location of the satellites and your distance from them. The distance is determined by how long it took the signals from various satellites to reach your receiver. But have you ever thought what tells the GPS satellites where they are in the first place? Read More
NASA IBEX spacecraft shows where we sit in the galaxy
By Jeff Salton
01:26 October 16, 2009 PDT
Move over Google Maps, NASA's Interstellar Boundary Explorer (IBEX) spacecraft has given scientists the tools to construct the first comprehensive sky map of our solar system and where it resides in the Milky Way galaxy. NASA says the new view will change the way researchers study the interaction between our galaxy and sun. Read More
Pentagon looking for someone to pick up the trash in space
18:05 October 8, 2009 PDT
The Soviet Union launched the very first earth-orbiting satellite in 1957, and the world looked on in awe as Sputnik flashed through the sky. Fifty years later, you’d be lucky to see anything. The U.S. Space Surveillance Network says there are almost 20,000 man-made objects in orbit, ninety-four percent of which are non-functional debris. And that’s not counting the hundreds of thousands of bits of junk too small to track. Little wonder the Defense Advanced Research Projects Agency (DARPA) has put out a call for someone – anyone – to come up with a way to effectively remove orbital debris. Read More
NASA live broadcast of LCROSS impact
By Paul Ridden
06:42 October 8, 2009 PDT
NASA's Lunar Prospector first detected some hydrogen signatures in craters on the dark side of the moon in 1999. Ever since, researchers have been keen to confirm the presence of water on the moon. The Lunar CRater Observing and Sensing Satellite (LCROSS) is tasked with crashing through the mists of speculation and conjecture and discover the truth. And you can watch all the action as it happens. Read More
What, exactly, makes a rocket fuel environmentally friendly?
By Darren Quick
22:52 October 7, 2009 PDT
Automobiles aren’t the only vehicles turning to more environmentally friendly fuel sources. As we reported recently, NASA are testing a new type of rocket propellant made of a mixture of water and “nanoscale aluminum” powder they claim could provide a cleaner way to launch rockets, power long-distance space missions and generate hydrogen for fuel cells. A number of readers wondered, not unreasonably, what qualifies a rocket fuel as eco-friendly. We now have a few more answers. Read More
Cosmic rays hit Space-Age high
By Jeff Salton
03:36 September 30, 2009 PDT
NASA has a warning for everyone planning a trip to Mars in the near future – it might be a good idea to wrap yourself in an extra layer of tinfoil when you travel According to sensors on NASA's ACE (Advanced Composition Explorer) spacecraft, galactic cosmic rays have just hit a Space Age high, reaching levels 19 percent higher than observed in the past 50 years and sparking a rethink on the radiation shielding needed for astronauts. Read More
Lotus leaf inspires dust-busting shield for space gear
By Paul Lester
16:56 September 27, 2009 PDT
Finding inspiration from nature in order to refine and advance modern technologies is nothing new; Mercedes’ bionic car was an interesting example and we’ve also seen a new ‘smart fabric’ based on the design of pine cones. Perhaps one of the most inspiring species, certainly in the plant world, is the lotus, which has already contributed to the development of fog-free windscreens and other surfaces along with improving the efficiency of solar cells. Now NASA is looking to the Lotus Leaf to develop a non-stick surface for use on spaceflight equipment. Read More
Water found on the moon – what will it mean for the future?
By Jude Garvey
22:18 September 24, 2009 PDT
Newspapers and websites around the world are buzzing with the news that water and hydroxyl (hydrogen and oxygen) molecules have been found in the polar regions of the moon. NASA announced yesterday that instruments aboard three separate spacecraft revealed that water molecules were present, although in relatively small amounts. It was also discovered that hydroxyl also existed in the lunar soil. Although the amount of water found is small, it is exciting in terms of potential for the possibilities of establishing a lunar base and even for creating spacecraft fuel. Read More
Swift snaps our best-ever ultraviolet image of neighboring Andromeda Galaxy
By Jeff Salton
18:51 September 20, 2009 PDT
In a galaxy far, far away … about 2.5 million light years, in fact, lie approximately 20,000 hot, young stars and dense clusters that comprise the Andromeda Galaxy. The galaxy, known as M31 in the constellation Andromeda, was recently captured by an ultraviolet optical telescope aboard NASA’s Swift satellite, and delivers the highest-resolution view of a neighboring spiral galaxy ever attained in the ultraviolet. Read More
Astronomers like what they see from rejuvenated NASA Hubble Space Telescope
By Jeff Salton
23:39 September 13, 2009 PDT
New images from the rejuvenated, more powerful Hubble Space Telescope have universally delighted astronomers. Last week, observations from four of its six operating science instruments were released by NASA. They include colorful, multi-wavelength pictures of far-flung galaxies, a densely-packed star cluster, an eerie ‘pillar of creation’, and a ‘butterfly’ nebula. Read More
LRO - a giant leap for data transfer from the moon
By Jeff Salton
22:52 August 27, 2009 PDT
How is it that my cell phone still loses connection in the city and my laptop barely gets the Internet in the mountains, yet NASA’s Lunar Reconnaissance Orbiter (LRO) can keep in touch with Earth from 238,800 miles away, 24 hours a day? Additionally, LRO can transmit 461GB of data per day (the equivalent amount of information found in a huge library), sending this information at a rate of up to 100Mb/s, while my so-called high-speed Internet service struggles to provide about 1-3Mb/s. Obviously, it’s not what you know but who you know! Read More
NASA tests eco-friendly rocket fuel
By Jeff Salton
21:11 August 23, 2009 PDT
NASA and the Air Force Office of Scientific Research (AFOSR) have successfully launched a nine-foot rocket to a height of 1,300ft using an environmentally-friendly propellant made from aluminum powder and water ice. The fuel, called ALICE, has the consistency of toothpaste with a high burn rate and achieved a maximum thrust of 650 pounds during this test. Read More
NASA confirms building blocks of life found on comets
By Paul Lester
18:40 August 19, 2009 PDT
Fresh evidence has been revealed to support the theory that life on Earth began in space. NASA’s Stardust probe, a specially-designed comet ‘chaser’, successfully collected particles shed from Comet Wild 2 in 2004, and NASA scientists have since confirmed for the first time that amino acids can indeed be found on these extraterrestrial bodies. Read More
NASA and Goodyear develop puncture proof tire for the 21st Century
By Paul Ridden
02:31 August 16, 2009 PDT
It looks like seventies science fiction television is (finally) going to meet reality with NASA planning to set up a real Moonbase Alpha by 2020. In order to meet the heavy load/long range transport requirements of life on the moon, NASA recently teamed up with Goodyear to review and redesign some 40-year-old technology in the shape of the airless tires first seen on the Lunar Rover Vehicles of Apollo missions. Read More
NASA competition offers green challenge for air travel
By Paul Lester
19:06 August 4, 2009 PDT
As we've seen with the ongoing X-Prize model, competitions can be a great way to provide incentive for technological advancements in transport. While the latest example, the Lunar X Prize, has its sight set on the heavens, NASA is running a competition with objectives a little closer to the ground. The Green Flight Challenge is enticing creative types with a USD$1.5 million prize in which designers need to create an aircraft that is low cost, quiet, has a short take-off, is 'road worthy' and gets excellent passenger-miles per gallon. Read More
The search for ice on the moon heats up
By Jeff Salton
19:58 August 2, 2009 PDT
Special sensing technology developed by Raytheon for the US Navy's miniaturized radio frequency system is aboard NASA’s Lunar Reconnaissance Orbiter (LRO), one of two spacecraft hoping to find photographic evidence that the polar regions of the moon contain ice. Until now, man hasn’t been able to confirm if there is ice on the moon because it is thought to exist only in permanently dark patches, or poles, on the lunar landscape – which means we haven’t been able to take detailed photos yet. NASA in particular is interested in determining the extent to which lunar ice exists, if at all, as the agency prepares for future manned exploration and possible habitation on the moon. Read More
New ion engine could reach Mars in 39 days
18:41 July 28, 2009 PDT
Last week, as the world celebrated the first lunar landing, Apollo 11 astronauts Buzz Aldrin and Michael Collins both called for NASA to make Mars its next goal. But the chemical propulsion system that took them to the moon would take six months, at least, to get a man to Mars and cost hundreds of billions of dollars. However, a new ion plasma rocket being developed by another former astronaut, Franklin Chang-Diaz, could potentially reach Mars in just 39 days using a fraction of the fuel. Read More
That 'small step for man' still very visible on the moon
07:28 July 20, 2009 PDT
Exactly forty years ago today, with fuel running short and alarms buzzing, Neil Armstrong and Buzz Aldrin set their lunar module Eagle down on the face of the moon, and mankind took its very first step on another celestial body. Last week, NASA’s Lunar Reconnaissance Orbiter (LRO) returned its first imagery of the Apollo moon landing sites. Even after all these years, there’s something truly heroic about seeing those lunar module descent stages sitting silently on the surface, testament to man’s imagination and determination. Read More
The new space race: first courier service to the moon
23:05 July 19, 2009 PDT
As we commemorate the fortieth anniversary of the Apollo moon landing this week, it’s worth asking what happened to those old dreams of lunar colonies and missions to Mars. NASA is reportedly struggling thanks to a general lack of interest and, it claims, funding. But, even with USD$187 billion, their Project Constellation is unlikely to reach the moon before 2020. The best hope right now seems to be driven by the private sector: Google’s USD$30 million Lunar X PRIZE and one of its most promising contenders, Odyssey Moon, which has announced plans to become the first private company to supply payload delivery services to the Moon. Read More
Virgin Galactic and the start of the Commercial Space Race
By Loz Blain
04:41 July 6, 2009 PDT
Space - it's the final frontier of human exploration, a mysterious eternity of distance, all around us and yet so tantalizingly out of reach. In its dark recesses hide the secrets of extraterrestrial life, planets yet to be explored, and it's reasonable to assume, some sort of future home for the human race once we're finished stuffing this planet up. Although mankind has been fascinated with space since we first saw the twinkling of night-time stars, it's only in the last half century that we have developed spaceships that allow us to take both ourselves and our equipment and technology outside the Earth's atmosphere. While the exhilaration of early space exploration seems to have faded in the public imagination over the past three decades, the scene is now set for a whole new space race. Loz Blain looks at where the 21st Century space Odyssey will take us and how we'll get there. Listen to the Podcast or Read More
GE and NASA to give open-rotor jet engine systems a spin
By Jude Garvey
06:31 June 15, 2009 PDT
GE Aviation and NASA will run a wind tunnel test program over the northern summer to evaluate and test counter-rotating fan-blade systems for open-rotor jet engine designs. The newly improved rig for testing was originally used by GE and NASA in the 1980s on scale models of counter-rotating fan systems, which led to the development of the GE36 engine. The test program also demonstrated that an open-rotor jet engine consumed 30 percent less fuel compared to similar-sized conventional jet engines. Just think what a 30 percent drop in fuel consumption would deliver today, not only to an airline industry struggling to keep ticket prices down, but also the positive benefits to the environment. Read More
Space sail to take out the trash
By Darren Quick
12:47 April 26, 2009 PDT
We’ve recently examined the danger posed to future space missions by the ever increasing collection of space junk orbiting the Earth. Now a plan by a pair of space engineers to use a sail to take out the trash – or rather, bring it back to Earth – may help to stop future space missions adding to the problem of space junk. Read More
PG&E signs up for 200 MW of baseload space solar power
By Paul Evans
03:51 April 19, 2009 PDT
US utility PG&E has this week announced it is seeking regulatory approval for a power supply deal that could see it buying power generated by solar satellites within seven years. If the proposal gets approval from regulators in its home state of California it will agree to a power purchase deal that from 2016 would see PG&E buy 200MW of renewable power over a 15-year period from space solar technology startup Solaren Corp. Read More
NASA investigating the SMART shape changing helicopter rotor
By David Greig
20:04 March 26, 2009 PDT
Can you imagine a world full of large, relatively quiet rotorcraft making short hops between cities such as New York and Washington, carrying as many as 100 passengers at a time in comfort and safety? This, amongst other technological improvements, would require helicopters with greatly improved rotor blade efficiency, allowing them to travel much quieter, smoother and further with the same amount of fuel. NASA is currently conducting research in their wind tunnels on the SMART rotor hub, which has rotor blades made with shape-changing materials that could one day make this scenario a reality. Read More
The most violent gamma-ray explosion ever observed
By Kyle Sherer
20:23 March 2, 2009 PST
The Fermi Gamma-ray Space telescope, which was launched on June 11 last year, has borne witness to the most violent gamma-ray burst ever observed – a monster that exceeded the power of 8000 supernovae. The GRB 080916C burst appeared in the Carina constellation, 12.2 billion light years from Earth, and was analyzed by five French teams, which published their results in the February 19 issue of Science Express. Read More
Jonathan Cole
- November 6, 2009 @ 16:15 UTC
