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Tag Archives: safety

How can I safely look at the Sun?

Urban Astronomer avatarPosted on 8 Feb, 2012 by Allen Versfeld4 Jul, 2016

 Update 5 June 2010: In less than a year, this article is already out of date.  First, NASA’s STEREO satellites have been supplanted by SDO as the ultimate solar observatory, and it’s gorgeous high resolution images of the Sun currently dominate astronomy image galleries.  Second, the Sun’s unusually long dormant period finally ended – there is now usually plenty for solar observers to see.  And finally, I am no longer observing for ASSA‘s solar section – personal commitments have not … Continue reading →

Posted in Astronomy, Questions and Answers | Tagged safety, Sun | Leave a reply

Will an astronaut explode if he takes off his helmet?

Urban Astronomer avatarPosted on 13 Aug, 2011 by Allen Versfeld27 Mar, 2017

We’ve all seen it happen in science fiction films. The expendable character is outside the space ship, or trapped in the air-lock.  The space suit is damaged, or the helmet is removed.  His friends frantically bang on the glass as we get a nice close-up of his face as it blows up like a balloon.  And then… well it depends on the film.  Sometimes he freezes solid and shatters like glass, other times he explodes in a messy shower of … Continue reading →

Posted in Astronomy, Questions and Answers | Tagged Astronauts, NASA, Q&A, safety, Space Travel | 1 Reply
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