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Saturday, December 30th, 2006
8:35 am - What's Up 2007

freetobeme
Dude, free skywatching e-book.

current mood: Free stuff!

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Tuesday, August 22nd, 2006
2:16 am - Spring Cleaning on Mars

rantipole6


I yoinked this from Scientific American.

 Martian Markings

August 17, 2006

MYSTERY MARTIAN MARKINGS: Spring in the southern hemisphere of Mars brings with it mystery. Every year, without fail, strange fan-like markings and dark spots appear on the ice cap at the Martian South Pole and disappear as the red planet's summer wanes. New observations prove the spots cannot just be the ground revealed by thawing ice. Instead, scientists say, they are the result of high-pressure gas geysers that arise when the sun warms layers of dust and sand beneath carbon dioxide frozen during the Martian winter. The warming particles cause the CO2 to explosively change from solid to gas and carry them away to form the unique shapes on the more permanently frozen water ice beneath. A paper detailing the findings appears today in the journal Nature.

 



current mood: mellow

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Sunday, August 20th, 2006
2:45 pm - Stephen Colbert and Neil DeGrasse Tyson

rantipole6


God forbid I turn into one of those bloggers who do nothing but link clips from the Colbert Report onto my posts, but this interview with Neil DeGrasse Tyson vis-à-vis the status of Pluto’s planet-ness was just too damn funny to pass up, particularly since Colbert is trying so, so hard not to laugh. Enjoy!

Current Music: Upgrade Your Gray Matter – Deltron 3030

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Friday, August 18th, 2006
11:48 am - The new definition of planet.

freetobeme


I'm sure some of you have heard about this by now. I, for one, am irritated.

I seriously can't handle how retarded some scientists can be.

(If anybody has any good resources, leave a comment because my internet connection is barely functioning and that space.com article is about the only thing I can open.)

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Monday, June 12th, 2006
12:16 pm - Corkscrewing and the like.

freetobeme
Someone in spacexploration posted this.

Which eventually lead me to read about this.

Can you imagine?

current mood: impressed

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Sunday, May 14th, 2006
10:44 am - The Very Large Array.

freetobeme

I took the above picture last summer on my trip through New Mexico.


I thought I that I too would point out that VLA rules.

If you're into radio astronomy at all it's really very amazing to see. And now I hear they're planning upgrades.

As APOD described:

"The VLA has been used to discover water on planet Mercury, radio-bright coronae around ordinary stars, micro-quasars in our Galaxy, gravitationally-induced Einstein rings around distant galaxies, and radio counterparts to cosmologically distant gamma-ray bursts. The vast size of the VLA has allowed astronomers to study the details of super-fast cosmic jets, and even map the center of our Galaxy."

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Saturday, March 18th, 2006
11:08 pm - The strange aspects of...

freetobeme

Uranus.


-Uranus (the 7th planet) was discovered over a hundred years after Neptune (the 8th planet). It had been sighted many times, but was mistaken for a star.
-It is the last planet visable with the naked eye.
-It orbits on it's side, like Pluto. (Though, props to Venus for being what I would consider upside down.)
-It rotates in retrograde, like Venus and Pluto.
-It has 13 rings which are oddly dark, most likely because they're composed of carbon and ice.
-It's magnetic field is very strange. Not only is it tilted so that it's closer to the equator than the axis, but it doesn't even run through the center of the planet. Being of a similar make up, Neptune also possesses this strange magnetic field.
-It has 27 moons (including Miranda, which has a feature known as Verona Rupes. This is a cliff that is 12 miles high and is known as the tallest cliff in the solar system. To put it in perspective the Grand Canyon is only a mile deep.)
-Many of the moons are named after Shakespearean characters instead of mythological characters. There are also a few named after characters created by Alexander Pope.
-In H. P. Lovecraft's Cthulhu Mythos, Uranus is known as L'gy'hx and is inhabited by cubical metallic many-legged creatures who worship Lrogg whose rituals require a yearly sacrifice in the form of the excising of the legs from a native. (Who doesn't love mythological leg-eating creatures?)

Here are some short videos on Uranus. I recommend the one about the magnetic field.

[Edit: Neptune was first observed in 1612, but it wasn't discovered (as a planet) until 1846...meaning that while it was observed before Uranus (1690), Uranus was correctly identified as a planet (1781) before Neptune...meaning that I'm on crack. My bad. Thanks to smailtronic for pointing out my mistake.]

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1:42 am - Enceladus: Saturn's eighth satellite.

freetobeme

The geyser on Enceladus.


The small moon is spewing water directly into space. This cryovolcanism is likely responsible for Saturn's icy E-ring. Encelandus has the highest albedo of any body in the solar system because it is composed mainly of ice. Scientists are excited about the prospect of life of Enceladus because it possesses liquid water, an atmosphere, and tectonism.

It's recently become a hot topic in the news. But alas, it is not new news.

Still, it's extremely interesting.

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Friday, March 10th, 2006
12:24 am - The Horsehead Nebula

freetobeme


The Antilhue Obersvatory in Chili has an amazing online gallery if you're interested.

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Thursday, December 15th, 2005
1:14 pm - Buffy.

freetobeme
A new Kuiper Belt object named Buffy stirs shit up.

Who really bought that passing star theory anyway?

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Sunday, December 11th, 2005
3:31 pm - Gold Panning the sky.

freetobeme

Star Cluster R136 in 30 Doradus


This is NASA's Astronomy Picture of the Day. And I was staring at it and thinking...my god, it reminds me of gold panning as a kid. (I grew up in California and I come from a family of miners. My roommate tells me she's never been gold panning...I'm baffled. Whaa?)

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Thursday, November 17th, 2005
1:10 pm - If you ever wondered what a fire looks like from space...

freetobeme


I stole this picture from http://earth.esa.int/ You might recognize it as San Francisco (if you stare at maps of California all day like some kind of weirdo (like me)). The European Space Agency snapped this shot last October with the Envisat satellite.

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Friday, November 4th, 2005
1:15 pm - Oh, Pluto. You and your gravity.

freetobeme
Pluto has three satellites?

Using NASA's Hubble Space Telescope to probe the ninth planet in our solar system, astronomers have discovered that Pluto may have not one, but three moons.

Pluto was discovered in 1930. The planet resides 3 billion miles from the sun in the heart of the Kuiper Belt, a vast region of icy, rocky bodies beyond Neptune's orbit. In 1978, astronomers discovered Charon, Pluto's only confirmed moon.

"If, as our new Hubble images indicate, Pluto has not one, but two or three moons, it will become the first body in the Kuiper Belt known to have more than one satellite," said Hal Weaver of the Johns Hopkins Applied Physics Laboratory, Laurel, Md. He is co-leader of the team that made the discovery.

The candidate moons, provisionally designated S/2005 P1 and S/2005 P2, are approximately 27,000 miles (44,000 kilometers) away from Pluto--in other words, two to three times as far from Pluto as Charon.

These are tiny moons. Their estimated diameters lie between 40 and 125 miles (64 and 200 kilometers). Charon, for comparison, is about 730 miles (1170 km) wide, while Pluto itself has a diameter of about 1410 miles (2270 km).

The team plans to make follow-up Hubble observations in February to confirm that the newly discovered objects are truly Pluto's moons. Only after confirmation will the International Astronomical Union consider permanent (and catchier) names for S/2005 P1 and S/2005 P2.

The Hubble telescope's Advanced Camera for Surveys observed the two new candidate moons on May 15, 2005. "The new satellite candidates are roughly 5,000 times fainter than Pluto, but they really stood out in these Hubble images," said Max Mutchler of the Space Telescope Science Institute and the first team member to identify the satellites.

Three days later, Hubble looked at Pluto again. The two objects were still there and appeared to be moving in orbit around Pluto.

"A re-examination of [older] Hubble images taken on June 14, 2002 has essentially confirmed the presence of both P1 and P2 near the predicted locations based on the 2005 Hubble observations," said Marc Buie of Lowell Observatory, Flagstaff, Ariz., another member of the research team.

The team looked long and hard for other potential moons around Pluto, but they didn't find any.

"These Hubble images represent the most sensitive search yet for objects around Pluto," said team member Andrew Steffl of the Southwest Research Institute, "and it is unlikely that there are any other moons larger than about 10 miles across in the Pluto system," he concludes.

current mood: That's kinda neat.

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Friday, September 16th, 2005
4:36 pm - Help!

common_nocturne
Hi everyone. Way cool community. I love outer space, but I'm no "nerd" & I really came here for some homework help. It's a very interesting question which so far no other community has been able to answer, so any help would be much appreciated!

Okay. My professor the other day was talking about how Ptolemaic theorists (who of course thought the earth was static and that the celestial bodies revolved around it , and not the other way round) were able to calculate the future position of any star. For example, how a person could figure out where x star would be four months from when and where it is observed. No matter how many times I raised my hand, for the life of me it didn't make sense!

I need to learn exactly what the procedure was for calculating the positions of stars according to Ptolemy. All I remember was that my teacher said one first had to locate the North Star and its "degrees to the earth". Second, he said something about counting the degrees the star in question would move eastward. That's really all I could make of it.

Could somebody help, please? Remember, We're talking about how to calculate star positions according to Ptolemaic logic , NOT how it's done today!
Thank you!

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Wednesday, September 14th, 2005
3:30 am - The Boomerang Nebula in Polarized Light

freetobeme


I am in love with this picture.

Link to the APOD article from which it was stolen.

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Saturday, July 30th, 2005
3:45 pm - Crater Lake.

freetobeme


An ice lake located in a crater on Mars.

current mood: neat.

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3:00 pm - 2003 UB313

freetobeme
Another article on the "new planet".

Personally, I'm very much against calling it a new planet.

What are your thoughts?

current mood: curious

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Friday, July 29th, 2005
11:28 pm - New Planet?

freetobeme
Looks like there is something out there bigger than Sedna.

current mood: What?

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Wednesday, July 27th, 2005
3:05 pm - Discovery.

freetobeme


The Discovery launch yesterday.

You can watch it here: Shuttle launch at MSNBC.

current mood: impressed

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Saturday, July 9th, 2005
4:36 pm - NGC 1999: Reflection Nebula.

freetobeme


Are you catching on to the fact that I'm a sucker for Hubble images? This is a nebula found in Orion. The star is V380 Orionis and it is responsible for the illumination of the nebula. The dark area is a Bok globule, which is a dark cloud between the illuminated nebula and the point at which the picture was taken. It's dark because there's nothing nearby to illuminate it.

current mood: content

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