Survival Machine » astronomy

Delay of de liftoff

simian — Fri, 28 Aug 2009 01:44:31 +0000

In case you haven’t heard, the STS-128 mission has been postponed three times now – the first was due to weather, and for the last two nights the delay has been due to a faulty liquid hydrogen fill and drain valve on the shuttle’s primary propulsion system. The launch is now targeted for 11:59 PM tomorrow, Friday, August 28th. Stay on top of the latest news at NASA’s main space shuttle mission webpage. I’ll be watching the site tomorrow eagerly, hoping that it doesn’t get delayed again! The weather forecast tomorrow calls for a 60% chance of favorable launch conditions at midnight, which means clear skies within 11.5 miles of the launch pad, with ENE and NNW winds < 39mph, and SSE and WSW winds < 23 mph… among other things. Not that I looked it up

On another note, I just dropped almost $300 at the Towson University bookstore today – for just two classes. Sigh. School starts Monday, and I’ll be officially back on the academic bandwagon. Here’s to progress!

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Four Centuries of Optical Zoom

simian — Tue, 25 Aug 2009 22:40:04 +0000

Today marks another landmark scientific anniversary – the 400th anniversary of Galileo’s first telescope. It was on this day in 1609 that Galileo presented his prototype 8x-magnification telescope to the assembled Senate of Venice. It was not the first telescope—that forgotten honor belongs to Dutch astronomer Hans Lipperhey who built a simple telescope just one year earlier, in 1608—but it was the one that captured the attention of the Venetian merchants (who were most interested in its practical applications for shipping and navigation) and lit the candle of modern astronomy. Galileo’s telescope allowed him to make precise observations that confirmed Copernicus’ heliocentric hypothesis and dispatched the notion of an Earth-centered universe. Galileo’s published defense of this view in 1632 led directly to a papal trial in 1633, in which he was declared “vehemently suspect of heresy” and, after recanting his scientific views under threat of torture, his imprisonment sentence was commuted to house arrest. Galileo remained in home near Florence (he was allowed one trip to seek medical advice near the end of his life) and was closely watched by church authorities until his death in 1642. For a laugh, you can read the Catholic Church’s position on the Galileo controversy.

I, for one, am overwhelmed with humility by the science that Galileo’s telescope revolutionized. It has brought us the likes of Carl Sagan, Maria Mitchell, Giovanni Cassini, and Stephen Hawking. It brought us NASA and the space program, which will launch the space shuttle Discovery (STS-128) tomorrow at 1:10 AM EDT on a mission to the International Space Station. There are no words that can, for the casual observer, capture the immensity of the expanding universe that telescopes have uncovered. There is, at least, an image that comes close. I am referring to the Hubble Ultra Deep Field, which is a composite image of a tiny region of space in the constellation Fornax, captured by the Hubble Space Telescope between 2003-2004. It looks back over approximately 13 billion years, showing in just a tiny speck of sky that appears dark to the human eye the multitude of galaxies that existed only 400-800 million years after the Big Bang. Every spot, blur, smudge, and speck on the image is an entire galaxy containing millions or billions of stars. I will say no more about it, for if you’ve never seen it, this image deserves quiet reflection. You can click on this small image to view the entire high-resolution version (18.1 MB). In honor of Galileo, and without further blabbering from this blogger:

Hubble Ultra Deep Field

Perseid Party, or Death From The Skies!

simian — Wed, 12 Aug 2009 06:31:33 +0000

IMPORTANT: Even if you can’t go with me tomorrow, please read this article about the Perseid Meteor Shower, and try to find the most promising way to see them near where you are. And if you happen to read this before 5AM ET/2AM PT this morning (I’m looking at you, California kids!), try to go out and take a look now!

So – who wants to join me to see the best meteor shower of the year – the Perseids?! It was too cloudy tonight to see very much, and even when some clear spots in the sky opened up, our very brightly lit urban environment overpowered all but the brightest stars. I’m taking C in my car, so I’ll have room for up to three others. I’ll drive some place dark, outside the city (suggestions welcome), and lay back to watch the show for at least 1 or 2 hours. Bringing a folding cot, sleeping bag, hammock, or blanket is recommended for prolonged viewing comfort. Binoculars, cameras, tripods, and telescopes are also great ideas if you have any of these available to you. Food and drink never hurt anyone, either (hah)! I will cancel this mini-trip if the weather doesn’t co-operate… as it turns out, unfortunately, I can’t see the sky with my naked eyes through total cloud cover.

Hooray for death from the skies!

Ouranos ex machina

simian — Wed, 29 Apr 2009 01:06:01 +0000

Dear Royal Swedish Academy of Sciences,

Verily, I beseech ye to establish a Nobel Prize for Magnificence, and award the first one to Steve Eves.

Humbly,
simian

Seriously, wow.

(No) space shuttle launch tonight

simian — Wed, 11 Mar 2009 19:31:32 +0000

I was just about to post to remind everyone to watch the space shuttle Discovery launch tonight, but I just learned that NASA has scrubbed the launch due to a leak discovered (discovery-d?) in the external liquid hydrogen fuel tank—aka the big red phallus under the shuttle. The mission was going to take seven crew members on a two-week mission to continue construction on the International Space Station, after which the goliath project would be 81% complete. The mission’s ISS add-ons include new solar panels and the last piece of the ISS’s girder (the longest part, to which the biggest solar panels are connected). This was going to be the first shuttle launch of 2009; Endeavour’s November 2008 launch was the last one.

Here’s NASA’s mission page for the mission, dubbed STS-119. From their clock it looks like they’re going to make the next launch attempt tomorrow night at around 9PM EDT. So stay tuned!