2015 Detroit NAIAS Auto Show

Debris

This workshop and others like it could be the key to making the space industry more enviro...

Key orbits frequented by GPS and communications satellites are becoming more and more hazardous, as man-made debris presents an increasingly palpable danger to the valuable assets orbiting at heights of around 2,000 km (1,243 miles) above the Earth. That' s why the European Space Agency (ESA) is hosting an international workshop geared towards cleaning up low-Earth orbit, with a focus on how to make the space industry more sustainable.  Read More

The Tornado Shield in its rolled-up portable state, ready for action

When a tornado's heading your way, the best thing you can do is to go your basement or better yet, to a purpose-built storm shelter. The problem is, not everyone has access to either. With that in mind, Missouri-based entrepreneur Steve Anderson created the Tuuli Armor Tornado Shield. Essentially, it's a big bag that you get inside of.  Read More

Artist's concept of a derelict satellite being reeled in after being harpooned by the e.De...

In 2021, as part of its Clean Space Initiative, ESA plans to launch the e.DeOrbit mission. The aim of this mission is to clean up the important polar orbits between altitudes of 800 to 1,000 km (500 to 625 mil) that face the prospect of becoming unusable due to the increasing buildup of space debris. The ESA has now announced plans to examine the potential for the mission to use space harpoons to capture large items, such as derelict satellites and the upper stages of rockets.  Read More

Earth is surrounded by a cloud of debris that is becoming increasingly hazardous to operat...

As part of its Clean Space Initiative, the ESA is planning a satellite salvage mission called e.DeOrbit that would use a satellite to net space debris and remove it from low Earth orbit. To capture such debris using an autonomous system, it needs to be targeted effectively, which is difficult when the debris is tumbling unpredictably. To fine tune the design of the e.DeOrbit mission, the ESA will commission a study to shed light on why space debris tumbles the way it does.  Read More

Netting a satellite (Image: ESA)

With the film Gravity hoovering up awards for its portrayal of astronauts dodging colliding satellites, now seems a good time to talk about the very real threat posed by space debris. It’s small wonder, then, that ESA’s Clean Space initiative is looking at developing a satellite that can rendezvous with space debris and render it harmless by netting it like fish. The proposal is just one of the ideas to be discussed as part of a symposium this May focusing on the space agency's e.DeOrbit mission.  Read More

Will the F1 be among the last of McLaren's cars to have windshield wipers? (Photo: McLaren...

Windshield wipers are life-savers, but also can drive one to distraction with their incessant streaking and chattering. Well, the tyranny of the wipers may soon be over. McLaren Automotive’s chief designer Frank Stephenson told The Sunday Times that the performance motoring company is investigating the use of "ultrasonic force fields" to replace windshield wipers in automobiles. While Stephenson referred to a military source for McLaren's tech, there appears to be very little public information on how such force fields might clean a windshield during a storm, so I'm taking a look at the patent history to see how this might be accomplished.  Read More

The Space Surveillance Telescope (SST) is designed to track space debris and small objects

In order to dodge something, you need to see it. If that something is space debris then sometimes the best thing to use is an old-fashioned telescope – or, in the case of the US Department of Defense, a state-of-the-art telescope capable of searching an area larger than the United States in seconds. That’s why DARPA is preparing to deliver the new Space Surveillance Telescope (SST) to Western Australia, where it will help track small satellites and space debris orbiting the Earth when it becomes operational in 2016.  Read More

Time exposure of the 2007 Perseids (Image: NASA)

Early August always brings with it the promise of a spectacular show in the form of the Perseid meteor shower. This shower, which peaks August 11-13, is one of the most reliable and active meteor displays throughout the year. A new NASA study also shows that more Perseid meteors are fireballs (averaging over 100 per year) than in any other meteor shower.  Read More

The Fermi Gamma-ray Space Telescope has a near-collision with Cosmos 1805

Julie McEnery is NASA's Project Scientist for the Fermi Gamma-ray Space Telescope. When she checked her email on March 29, 2012, she was startled to find an automatically generated message stating that in six days, her half-billion-plus dollar satellite was going to cross paths with Cosmos 1805, a Soviet-era spy satellite. The predicted encounter had the two satellites occupying the same coordinates only 30 milliseconds apart. Not only that, but Cosmos was in an orbit moving nearly perpendicular to Fermi such that their collision would be equivalent to tons of high explosives. Essentially total destruction.  Read More

Representation of a satellite being destroyed by collision with orbital debris (Image: ESA...

Orbital debris is (nearly) forever, and threatens to render near-Earth space unusable, and all but impassible. The 2007 Chinese anti-satellite test and an accidental collision between two communications satellites in 2009 highlighted the need to study orbital collisions of modern satellites. The NASA Standard Breakup Model, based on hypervelocity collision studies of 1960s-era satellites, fails to accurately describe collisions of modern satellites, owing to advances made in materials and construction. To address this problem, NASA is updating the SBM by building and destroying a modern dummy satellite called DebriSat.  Read More

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