Skip to main content

Lucky Philae


So, Philae bounced twice before coming to a halt. 'Bounce' does not quite describe it correctly. Philae did by far the biggest #jump ever. The f*cking tallest, longest, slowest JUMP ever done by a human made object (including humans). Without using thrusters, just by pushing off from a rock. That's something for the Guiness Book of Records.

And Philae was lucky as hell. It jumped about 1 km high and 1 km wide on a rock barely 2 km large. Had it jumped only a little bit more, then it would have missed this side of the comet and probably crashed head first into some other part. Philae jumped off very slowly at about 1/5 walking speed. Had it been twice as fast, then it would have left the comet entirely and it would be lost in space by now.

This record will stand for a very long time. Jumping so high is only possible in very low gravity. Only on a small object with small escape velocity. This makes a jump very risky. If you jump too far, then you drift away into the darkness. Trying it would be foolish. But still, 50 years from now, there will be an astronaut/cosmonaut/taikonaut who happens to stand on a small celestial body for commercial or science reasons. And he/she will try to excel the Philae record. Probably with a recovery option. But it will still be difficult and dangerous. No safety leash is allowed for the record attempt to be valid.

Comments

Popular posts from this blog

Watch as Patrick Stewart Recites a Poem with a Yorkshire Dialect

In a scene from TOWN with Nicholas Crane, Patrick Stewart, of Star Trek and X-men fame,  gets nostalgic over his childhood and recites a poem in his native Yorkshire dialect. His mother and aunt would recite the poem around Christmas time every year which is probably why he still remembers it many years later. Stewart was born in Mirfield - a small town in West Yorkshire England.

Wildlife conservation on ice: frozen zoos to save animals

  On the edge: Disease and habitat loss is decimating wild amphibian populations globally, with more than 200 species needing urgent intervention through captive breeding, says Dr. Simon Clulow. In a south-eastern suburb in Melbourne, there’s a zoo. It has no visitors, and there are no animals anywhere inside it. Rather, the Australian Frozen Zoo houses living cells and genetic material from Australian native and rare and exotic species. This place, and others like it, could be a big part of the future of conservation. Department of Biological Sciences’ Simon Clulow and his colleagues make the case for ‘biobanking’ in a recent piece in Conservation Letters. Clulow is keen to stress that this doesn’t mean getting rid of conventional zoos or captive breeding programs. “Captive breeding has had some wonderful successes, and there will always be a huge place for it,” he says. PhD student and lead author Lachlan Howell agrees. “It was captive breeding that brought the giant panda back f...

California’s surge of large wildfires: a multi-dimensional fire challenge

September 21, 2021  Accumulating fuels and rising populations are contributing to California’s large, destructive fires. Climate change has helped fuel California’s surge of unusually large and destructive fires by exacerbating heat waves and droughts , but climate is not the only factor contributing to the surge. More than a century of fire suppression has caused excessive amounts of dead trees, leaf litter, and dried brush to build up in forests. Meanwhile, California’s increasing population means that many more people now live and work in areas that are prone to fire. The consequences of all the fires are remarkable, even from space. The false-color image at the top of the page shows burn scars left by large fires that burned in recent years, including the two largest incidents on record in California: the August fire complex and the Dixie fire . The image was captured by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite on September 21, 2021. ...