MetaFilter posts tagged with astronomy and planets

Zeta Reticuli is watching the Brady Bunch

Artw — Tue, 07 Jul 2009 09:19:22 -0800

If extraterrestrial civilizations are monitoring our TV broadcasts, then this is what they are currently watching.

Did that star just blink?

borkencode — Fri, 06 Mar 2009 14:32:32 -0800

Tonight NASA is scheduled to launch the Kepler Mission (named after planetary legislator Johannes Kepler) with the goal of finding Earth size planets in orbit around stars in the Cygnus-Lyra region of the sky. Over the next 3 and a half years it will maintain a nearly unblinking gaze on the approximately 100 thousand stars in the region. NASA expects it to find about 50 Earth size planets, as well as hundreds that are larger. You can watch the launch live on NASA TV. Currently the smallest known exoplanet is COROT-Exo-7b discovered by the French COROT mission. (previously) Both the COROT and Kepler missions use the planetary transit method of detection, where a planet crossing the face of a star causes a dip in its brightness.

Stars In Your Eyes

Miko — Thu, 10 Apr 2008 19:36:12 -0800

See Saturn this Saturday April 12 is the second annual International Sidewalk Astronomy Night, a worldwide event coordinated by the Sidewalk Astronomers. The group, founded in 1968 by John Dobson (subject of this documentary), is dedicated to a sort of guerrilla astronomy -- experienced stargeeks bringing their really good telescopes out to places where people are. So even on your way to the bars, the shows, and the honky-tonk you can see stuff like this and this - like these people did.

Space Oddity

madamjujujive — Sun, 10 Jun 2007 22:22:40 -0800

Mars and Beyond - 50 years ago, this animated episode of Tomorrowland aired on Disneyland a few months after the launch of Sputnik - an entertaining melange of astronomy, sci-fi, pop culture, science, speculation, and surreality. Walt himself and Wernher von Braun make guest appearances and clip 5 is particularly trippy. (Parts 2, 3, 4, 5, 6)

Ice hot planet

Artw — Wed, 16 May 2007 14:09:15 -0800

Scientists have discovered a planet composed of scorching hot ice. Originally thought to be a gas giant due to its mass, its actually only four times the size of Earth and most likely composed of exotic forms of ice, such as Ice VII and Ice X with s surface temperature of 300° C.

Far distant lands

Devonian — Sun, 22 Apr 2007 12:46:24 -0800

The first was found just fifteen years ago, after centuries of speculation. As of today, we're up to 227 and counting. Most are just wobbles in data, but we have pictures and exotica too. And we are looking for more (although some think we shouldn't look very hard and others are drawing some surprising conclusions). The science and technology of finding the most fascinating and elusive types demands some of the cleverest engineering, yet you can even have a go for yourself. Previously on Metafilter

I guess we need a new mnemonic...

nekton — Wed, 16 Aug 2006 06:58:03 -0800

Ceres, Charon, and 2003 UB313 (a.k.a. Xena) may join the 9 planets we already know (and strive to remember) if a resolution by the International Astronomical Union is passed next week. So what makes a planet, according to the IAU? Having sufficient mass to achieve hydrostatic equilibrium (i.e. be round enough...welcome former asteroid Ceres) and being in orbit around a star without being a star itself or a satellite of another planet (apparently Charon and Pluto are actually a double planet.) Mike Brown, discoverer of "10th planet" Sedna and alleged "Pluto-hater", doesn't really like the idea.

Stellarium

fire&wings — Mon, 07 Nov 2005 17:32:14 -0800

Stellarium. A free program which renders realistic skies in real time, and more. Handy for anyone who ever wrangled with one of these. And very cool to watch in fast forward.

Watch Your Back, Pluto

gimonca — Fri, 29 Jul 2005 16:19:36 -0800

Big object sighted... if you liked Sedna and Quaoar, you're bound to love 2003 EL61, which has been found lurking in photographs from a couple of years ago. There appears to be some speculation that this one could be larger than Pluto.

Star Cluster and You

dfowler — Tue, 05 Apr 2005 07:38:44 -0800

First Super Star Cluster detected in Milky Way, while in the Andromeda Galaxy (M31), MYSTERY Star Clusters are found.
Unique? Us? Haw. Plenty of Earth-like planets await discovery, say researchers.

First extrasolar planet photo

dfowler — Mon, 04 Apr 2005 07:37:48 -0800

Orbiting GQ Lupi: first confirmed images of extrasolar planet

Ring-around-the-posie

moonbird — Fri, 02 Jul 2004 06:17:31 -0800

" It was beyond description, really, it was mind-blowing," she said. "I'm surprised at how surprised I am at the beauty and the clarity of these images. They are shocking to me."

Hubble harvest 100 new planets

stbalbach — Thu, 01 Jul 2004 22:31:39 -0800

Hubble harvests 100 new planets during a 7-day sweep of the bulge of the Milky Way.. If confirmed it would almost double the number of known planets to about 230. "I think this work has the potential to be the most significant advance in discovering extra-solar planetary systems since the first planets were discovered in the mid-1990s."

Chasing Venus

carter — Sun, 04 Apr 2004 07:34:57 -0800

Chasing Venus Transits of Venus occur every 130 years or so when Venus can be observed passing across the face of the sun. Chasing Venus is an online exhibition by Smithsonian Institution Libraries that tells the story of how the transit has been observed since the 17th century, with early observations in England, illustrated accounts of expeditions by 18th century astronomers to various parts of the world, and early uses of photography to record observations in the 19th century. Includes links to animations of transits reconstructed from Victorian photographs, and details of a lecture series on Thursdays in April and May (first one April 8). The first transit since 1882 is this year.

Observing the five planets

carter — Sun, 21 Mar 2004 07:30:16 -0800

Mercury, Venus, Mars, Jupiter and Saturn, the five planets visible to the naked eye, can all be seen simultaneously after sunset over the next few weeks. Viewing details. The next opportunity will be in 2036.

planetary photojournal

crunchland — Tue, 18 Nov 2003 07:43:18 -0800

planetary photojournal

2000 EB173 gets a name

rdr — Sun, 24 Aug 2003 04:48:35 -0800

Large rock named Huya! 3 years after being discovered a large object (?) orbiting the sun has been named.

Sketches at the Eyepiece

plep — Mon, 23 Jun 2003 10:39:38 -0800

Sketches at the Eyepiece. Drawings of the Moon, the Sun, planets and other astronomical objects.
Also The Face of the Moon: Galileo to Apollo. A catalogue of rare books and maps, with images.

Celestial spheres

WolfDaddy — Fri, 02 May 2003 16:59:21 -0800

This guy can build an orrery for you. Or you can make your own armillary sphere. These two devices are quite possibly the most elegant and beautiful scientific instruments ever created.

Is there Life on Mars?

anyanka — Wed, 22 Jan 2003 16:36:53 -0800

Is there Life on Mars? As NASA announce a nuclear-powered Mars and beyond project, British scientists are looking forward to the launch of the Beagle 2 which will search for signs of life on the Red Planet. Is this the return of the Space Race in a new form? And will they find any sign of life?

Aonther massive celestial object, with a companion star in tow,

Smart Dalek — Tue, 19 Nov 2002 13:29:03 -0800

Another massive celestial object, with a companion star in tow, has been discovered hurtling through the Milky Way. Unlike similar discoveries confirming the bow shock theory of stellar dynamics, this week's phenomenon is considerably older, as it's an aftereffect of the galactic core's formation. The French and Argentine astromoners making the discovery believe what they've witnessed may be a black hole, though theoretically, the collasped matter may be a gravistar.

adrianhon — Sun, 26 May 2002 07:35:10 -0800

Next Thursday, NASA will announce the discovery of huge water ice oceans on Mars. Lying less than a metre beneath the surface south of 60° latitude, the water ice reservoirs if melted would form an ocean 500m deep covering the entire planet. NASA insiders believe these findings could result in a manned landing within 20 years.

Lynsey — Mon, 06 May 2002 21:12:38 -0800

I saw all five of the visible planets in our solar system tonight! And so can you, if you have clear skies and go outside between 8:45 and 9 p.m. your time this week. Disclaimer - my naked eyes weren't good enough to see Mercury but I could see it with binoculars.

crasspastor — Tue, 11 Sep 2001 18:00:41 -0800

Reflections on a Mote of Dust "We succeeded in taking that picture [from deep space], and, if you look at it, you see a dot. That's here. That's home. That's us. On it, everyone you ever heard of, every human being who ever lived, lived out their lives. The aggregate of all our joys and sufferings, thousands of confident religions, ideologies and economic doctrines, every hunter and forager, every hero and coward, every creator and destroyer of civilizations, every king and peasant, every young couple in love, every hopeful child, every mother and father, every inventor and explorer, every teacher of morals, every corrupt politician, every superstar, every supreme leader, every saint and sinner in the history of our species, lived there on a mote of dust, suspended in a sunbeam." Carl Sagan "Pale Blue Dot"

john — Mon, 20 Nov 2000 16:52:22 -0800

Get a piece of the Rock. Moon that is. I say boy, you got to think of the future. Just remember all these worlds are yours except Europa.