Posts Tagged ‘space’

Fomalhaut B

Posted: 13 November 2008 in Uncategorized
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Hubble has captured a visible-spectrum image of a planet revolving around Fomalhaut.  Previously planets had only been observed indirectly, such as when the planet passes between Earth and the star.  Fomalhaut is close enough that Hubble was able to catch a glimpse of the highly reflective giant planet, which is about three times the size of Jupiter and tens times as far from Fomalhaut as Saturn is from the sun.

Check out the video for more info.

Hubble captures first visible image of an extra solar planet

Hubble captures first visible image of an extra solar planet

Update:  I originally misspelled this is as “Formalhaut,” a mistake I’ve been making ever since I was a kid and always forget.

Mars Phoenix gets a lame-ass epitaph

Posted: 5 November 2008 in Uncategorized
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Well the Wired contest to come up with an epitaph for the Mars Phoenix lander has ended and the final choice blows, in my opinion.

Veni, vidi, fodi. (I came, I saw, I dug) 

The number three choice wasn’t so bad:

It is enough for me. But for you, I plead: go farther, still. 

My choice, as I mentioned before, was ranked at #4, so not too bad.  I scrolled down to the very end of the list and looked for the most hated epitaphs.  There were some real stinkers, to be sure, but also some funny ones.  Here are several of the turdiest:

  • this weather gives new meaning to the old saying, ‘blue balls in a nor’easter’
  • May he rest in peace ~~~Lance was here ’69~~~
  • Go to the light. Like great men and myths, (Elvis, Tupac, BigFoot, Nessie) your legend will live on after your tweetstream goes flatline.
  • Better Dead on Red. The First of what will be many efforts to raise us from the mire of our own making.

@MarsPhoenix is a twitter success story.  It’s also a NASA success story.  Oh and also a scientific success for all it has done on Mars.  As six months of night approach, the Phoenix probe was slowly shutting down systems to finish analyses.  A couple of days ago, a dust storm diminished the day time charging cycle enough that it caused the lander to go into hibernation.  NASA is going to try to revive the it this weekend, but the prospects are grim.  Even more grim are the chances that the probe will awake come spring.  Temperatures at the Martian poles go so low in the winter, they exceed the minimum tolerance for electrical circuits.

But back to the Twitter success story.  As of right now, @MarsPhoenix has 37,284 followers.  That makes it one of the most followed users on Twitter.  For the past few months, NASA has been posting updates posing as the probe.  The updates take the form of first-person snippets of information and answers to questions from users.  Overall, it has been great PR, keeping people up-to-date on space exploration in a completely new way.  We can’t exactly have a live feed from Mars, but by personifying the probe and getting people involved, NASA has really done a lot for improving public involvement in the mission.

NASA has expanded their twittering to a whole host of other missions.  Most notable (to me) amongst them are the Cassini probe (which is orbiting Saturn),  the Lunar Reconnaissance Orbiter, and the Spirit and Opportunity rovers.  So if you twitter, they might be worth some of your time.

@MarsPhoenix posted the following earlier today:

I should stay well-preserved in this cold. I’ll be humankind’s monument here for centuries, eons, until future explorers come for me ;-)

In honor of its imminent passing, Wired is running a contest to find the best epitaph for Phoenix.  My current favorite is:  ”Every robotic lander dies. Not every robotic lander truly lives.”  I’m getting a little choked up..

RedOrbit Blog of the Day

Posted: 6 June 2008 in Uncategorized
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RedOrbit Blog of the Day 2008-06-06

RedOrbit named me one of their blogs of the day today. Go me! I had come across them a time or two before. They are a space/tech news site. Not bad for that sort of thing and certainly less spammy and clunky than Space.com.

The Bleak Blackness of Space

Posted: 22 March 2008 in Uncategorized
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How long could you survive in the vacuum of space?

Whenever I hear the word enormity used to describe how gi-freakin-normous something is, I always willfully misinterpret it to mean an act of extreme evil or extreme wickedness.  Now before you start screaming prescriptivist and throwing Kleenexes drenched in the snot of sociolinguistics at me — I’m not being a prescriptivist.  Of course people have the right to use enormity that way.  It is certainly the trend for that word and it probably will be within my generation that almost everyone forgets its original meaning.  I just so like the meaning of extreme wickedness that I want to be able to use it to mean that without being misinterpreted.  And a lot of people only know that word to mean gigantic.

So I was listening to a promo video (below) by Richard Branson of Virgin Galactic.  Branson opens up with this line:

 ”Astronauts of the past 45 years have all returned to Earth struggling to convey the enormity of what they have discovered and with their perceptions clearly changed.”

And quite frankly, the sinister music blends with my interpretation of enormity far better.  Astronauts have all returned overwhelmed by the vast wickedness they encountered in space.  Awesome!  I totally wanna go now.  Actually, I’ve always wanted to go and probably would go even if I was told I had a 50/50 chance of making it back alive, so enormity just ups the thrill level.

This T-shirt just cracked me up:

Finders Keepers

Of course, it actually could have been this way. I think the US even had a defacto assumption that the moon was ours. This is very much not the case. With the recent Japanese and Chinese probes to the moon, the upcoming German probe, and rumors of more probes and missions to the moon, there are many claimants. There was a Moon Treaty that was supposed to hand control of all heavenly bodies over to the international community (that is, the UN). However, this useless piece of paper was only ratified by the likes of Mexico, France, India, Chile, Australia, and the Phillipines (and several other small countries), none of which have a manned space program.

The moon is potentially a gold mine (or rather, a helium-3 mine). What it is not, is a waste of time. If we ever do manned exploration of other worlds, a lunar base would be a great base of operations. For one, it’s good practice. For another, the lower lunar gravity could allow people to reside there longer with slightly reduced health effects while still providing an easy base to launch from. Of course, the moon has its dangers. NASA is planning a new lunar base on the lunar pole, where danger from solar radiation is diminished while still allowing for energy gathering from solar arrays.

It will be interesting to see how things turn out on the moon. Will there be borders and bases manned by robots and people from many different countries? Or will we see international cooperation as we have seen with the space station? At this point, it’s anyone’s guess.

Phaethon Cometh

Posted: 7 December 2007 in Uncategorized
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One of the dark horses of the inner solar system makes its closest approach to Earth since it was discovered in 1983 soon.  Phaethon is an asteroid (perhaps the burnt out core of a comet).  We pass through its debris trail every December, resulting in the Geminid meteor shower.  This year, the Geminids will peak on December 13-14th.  Bonus:  the Geminids are likely to be even better than the Perseids this year.  Unfortunately, it’s cold out.  Plus I have an exam on the 14th.  This meteor shower didn’t get the memo I sent out that it had to fall on a weekend.

So what’s special about the Geminids?  Phaethon is a source of denser meteors than are found in most other meteor showers.  This results in meteor paths that can be jagged and more meteors that break apart and split.  According to Space.com, the Geminids have a history of slow, bright meteors and faint meteors, but few medium-brightness ones.  The moon will be a faint crescent and peak times will see 60-120 meteors per hour.

For more on the discussion of whether Phaethon is a burnt out comet or an asteroid, check out Astroprof’s page on the topic.  If you happened to download Celestia when I talked about it before, you can also download an add-on that includes a few thousand near-Earth objects.  Phaethon is included in that pack (it doesn’t come with Celestia by default, or at least I couldn’t find it).  That site (the Celestia Motherlode) has a number of very awesome additions to Celestia, so I recommend checking it out.

Celestia

Posted: 1 December 2007 in Uncategorized
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When I was around 12 or 13, I first got a hold of my stepfather’s physics text book. It was magic. The rules that governed the physical world were right there in the form of equations on a page. I was totally captivated. Newton’s laws of motion, gravity, angular momentum, and the theory of relativity. When I first learned about relativistic time dilation, it was life-changing. I resolved to become an astrophysicist. A lot of changes happened in my life that turned that dream into my current one. But, like all first loves, it never went away.

When I got my first computer, I had hopes of writing a program that would plot the positions of the stars as they were in space (3-D) versus how they appeared in the Earth’s sky (2-D). I achieved a little bit of success getting the vectors worked out from the distance, right ascension, declination and so on. I had no easy way of visualizing it though. Doing 3-D plots in BASIC back in 1990 wasn’t the easiest thing in the world. So that project died.

Then like a ghost, Celestia came to me last night. Wrapped up in her open source glory, I dared not even dream that she could perform what I had so long abandoned all hope of. But she did my friend, she did. (My wife won’t like this imagery :))

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Rosetta

Posted: 14 November 2007 in Uncategorized
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The second fantastic photo of Earth from space I’ve come across in as many days was taken by the Rosetta comet probe sent up by the European Space Agency (ESA). The Rosetta craft made big news recently when it was mistaken for an asteroid that was going to make a near-Earth pass. The Minor Planet Center failed to cross check the object against known probes and so sent out an alarm before realizing their mistake. Rosetta is using the Earth as a slingshot to propel it into the outer solar system (4.4 billion miles) to the Comet 67/P Churyumov-Gerasimenko. After that it will return to Earth for another gravitational slingshot.

Earth as seen by the Rosetta probe.