Snippet: Space Debris is Becoming a Serious Problem, but Google Earth is Watching

Space junk as plotted in the Google Earth software.

Every time a rocket launches, a spaceship orbits, an astronaut drops some trash or the US blows up a satellite, debris is created. Space debris (a.k.a. space junk) is a nasty side-effect of our push into space, but it isn’t a recent phenomenon. Even the early Gemini missions in the sixties did it, as does the ultra-efficient International Space Station – bits of spacesuits, cameras, nuts, bolts and tools are accidentally (and deliberately) dropped into the vacuum. But it’s only a bit of litter right? Wrong. That’s a hyper-velocity rifle shot, and it’s coming to a spaceship very soon, if we don’t take action now…
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The Mischievous Nature of Primordial Black Holes

A black hole dining on a star… primordial black holes on the other hand less destructive, but can cause some mayhem nonetheless. Image credit: NASA. Source: http://www.dailygalaxy.com/photos/uncategorized/2007/07/05/black_hole_3_3.jpg

Primordial black holes are strange little critters. They’re not the product of a massive star recently gone supernova and they’re not as exotic as a wormhole, tunnelling a gateway into another dimension. They are very, very old remnants of the very beginning of our Universe. Much like the foamy bubbles left over from washing the dishes, a few bubbles stubbornly hang around on the side of the sink for an hour or so after the water has long gone. Primordial black holes (or PBHs for short) are just that, the leftovers from the very energetic (and very bubbly) Big Bang 14 billion years ago…

…but they’re not done causing trouble quite yet…
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Snippet: Where Science and Art Meet – The Internet “Universe” Frozen in Time

San Diego Supercomputer Center image of the Internet Universe frozen in time. Image credit: UCSD. Souce:http://www.physorg.com/news122832578.html

This striking image has been created by tracking the round-trip times of data packets sent from a web site in Virginia to thousands of nodes around the World Wide Web. Using a new technique, this visualization method (3D “hyperbolic geometry”) allows the viewer to analyse large amounts of data mapped around a sphere. Not only does it give an insight to where data travels around the Internet – like an electronic dye highlighting the route packets of data take – it has also become a work of art…
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Snippet: Can Pieces of Mercury be Found on Earth?

A meteorite on the surface of Mars. Image credit: NASA/JPL

This is an interesting thought. We know that rocks from space can fall through the atmosphere and hit the ground as meteorites. But where do these rocks come from? Some come from old remnants of the early solar system, floating through space until they are captured by the Earth’s gravitational pull. Other meteorites come from other planets, ejected pieces of the planet crust (caused itself by a meteorite impact), escaping from the planets gravity by achieving “escape velocity”. We have found samples known to come from the Moon and Mars, but what about the other planets? Venus’ atmosphere is too thick to allow pieces of its surface to fly into space, but what about the first planet from the Sun, Mercury? Can bits of Mercury travel through space and land on Earth?
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Server Errors, RSS Feed Fix and Eeron.com

OK, I think I have it sorted out… I installed WordPress on astroengine.com so I could make life easier for me to write and organize articles – afterall, the previous version was always a “work in progress” and never became a serious science blog. I gained some satisfaction from building the site from the ground up, including custom RSS feeds, custom functions, creating complex gallery systems… all in all the “Astroengine Project” consumed months of development time. And yet, I was never satisfied.
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Protecting Future Mars Colonies From Solar Radiation: An Early Warning System

A solar flare during the storms of 2003. Image taken by the EIT instrument on SOHO. Image credit: NASA/EIT

We all know that space can be a dangerous place. Many safety measures are put in place by space agency scientists so astronaut’s lives are protected and mission success can be assured. Generally, some degree of certainty can be insured in near Earth orbit, protecting astronauts onboard the International Space Station and Shuttle missions, as most activities go on within the Earth’s protective magnetosphere. But in the future, when we establish a colony on the Moon and Mars, how will human life be protected from the ravages of solar radiation? In the case of Mars, this will be of special interest as should something go wrong, colonists will be by themselves…
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Snippet: Will the Earth be Safe From Solar Expansion? The Outlook Isn’t Great…

As the Sun runs out of fuel, it will swell… but will it swell enough to swallow the Earth? Image credit: Mark Garlick/HELAS. Source: http://www.sciam.com/article.cfm?id=exoplanet-red-giant-space-astronomy-stars

In 7 billion years time, the Sun will run out of fuel. As it dies, it will swell so big that many predict that it will reach as far as Earth’s orbit. Naturally, the likelihood of the Earth still harbouring life may be debatable (after all 7 billion years is a long, long time), but should the human race still be around, and evolved into something totally unrecognizable, what will we see?
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When Stars Collide: LIGO and Gravitational Wave Astronomy

Binary black holes generating gravitational waves. Image credit: Image Credit: K. Thorne (Caltech), T. Carnahan (NASA GSFC). Source: http://lisa.jpl.nasa.gov/gallery/binary-wave.html

The Laser Interferometer Gravitational-Wave Observatory (LIGO) is an ambitious project. The experiment is designed to detect and characterize gravitational waves generated by energetic and massive events in the cosmos. What’s more, as LIGO has two stations situated 3000 kilometres (1870 miles) apart, through triangulation, the location of a star collision or black hole event can be deduced in the sky. Completed two years ago, LIGO has been taking data ever since and the time has now come to begin analysing the results, seeing if the theoretical gravitational wave can actually be observed, bringing us into a new era of astronomy, gravitational wave astronomy
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