Missed the transit of Venus in 2004? Want to know if you'll be able to see the transit on June 5/6 from your location? Want a free badge-of-geekhood app for your iPhone? It's all right here! [more inside]
posted by Quietgal
on Jun 1, 2012 -
The Thirteen Towers of Chankillo
in Peru may be the Western Hemisphere's oldest known full-service
solar observatory, showing evidence of early, sophisticated Sun cults
, according to archaeoastronomy
professor Clive Ruggles
. The 2,300-year-old complex featured 13 towers running north to south along a ridge and spread across 980 feet to form a toothed horizon that spans the solar arc
. Last year, another ancient observatory was discovered in Peru by Robert Benfer
. The Temple of the Fox
is 4,200 years old, making it 1,900 years older
than the Chankillo site, but wasn't a complete calendar.
posted by homunculus
on Mar 3, 2007 -
Transit of Mercury again. here
Transit of Mercury again. Today -- and not for another seven years or so -- Mercury passes between the Earth and the Sun, shwoing up a speck-like black circle. But don't look. Starting times, real-time visual, ways to see it and another caution are here. rotoman
posted by rotoman
on Nov 7, 2006 -
The largest solar flare of the current solar cycle
shot off the sun earlier today. After the media latched on to what was predicted to be mostly a non-event last week (probably due to a NASA article released around the same time about a super spacestorm
) , it's not making as much news this time. But you should pay attention this time
. This could be the best and last chance for a lot of us farther south to see some auroras before the sun dives into solar minimum, assuming all the variables line up
correctly this time. I recommend watching the Solar Terrestrial Dispatch
, as it is a great all around resource for solar activity and auroras that includes live data and sightings reports by the general public. Unfortunately though, no doubt as word IS spreading, that site is being hammered again and may be quite slow.
posted by yupislyr
on Oct 28, 2003 -
A Doomed planet
orbiting a distant star has been located. No, not Krypton
. The planet is going to be consumed by the star soon
, but astronomers are not going to wait up for it.
posted by kaemaril
on Jan 28, 2003 -
A very well designed site on the Analemma
. Don't be scared off by the math, as there are excellent diagrams and quicktime movies on this difficult to visualize phenomena. Difficult, but not impossible, to photograph (probably less than 10 photos are in existence) Ulrich Bienert
came close, and has a gallery and some tips if you're so inclined.
posted by quercus
on Aug 6, 2002 -
Sol: A Great Big Ball of Burning....Iron?
Well that's what a UMRolla professor thinks anyway -- instead of being mostly hydrogen, that the sun is actually mostly iron
. He's going against all popular belief, and indeed lots of evidence, but his theory states that our sun formed around the iron core of an old supernova.
posted by LuxFX
on Jul 24, 2002 -
A £900,000 mirror sculpture destined for a square in Nottingham, UK, will have to be shielded to prevent it focusing the Sun's rays and barbecuing passing birds. Anish Kapoor's
highly polished concave steel mirror is six metres in diameter. Direct sunlight hitting the mirror would be focused into a narrow beam of light as hot as the surface of the Sun, says astronomer Michael Merrifield of Nottingham University.
posted by zeoslap
on Mar 7, 2001 -