Supermoon Forecast: The Moon Hasn't Been This Close in Almost 69 Years
Supermoon Forecast: The Moon Hasn't Been This Close in Almost 69 Years
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On Monday (Nov. 14) at 3:15 a.m. PST, the moon will arrive at its closest point to the Earth in 2016: a distance of 221,524 miles (356,508 kilometers) away. This distance, which is measured from the center of the Earth to the center of the moon, is within 85 miles (137 km) of the moon's closest possible approach to Earth; to be sure, this is an extreme perigee.

Two hours and 37 minutes after perigee (the moon's closest point to Earth), the orb will officially turn full. [...5:52 a.m. PST on Nov. 14...] this month's full moon [...] will be the closest since Jan. 26, 1948.

The full moon won't approach this close again until November 2034, although there were even closer full moons in January 1912 and January 1930.
[...]
Dramatic tides
[...]
Such an extreme tide is known as a perigean spring tide, where the word "spring" is derived from the German springen, "to spring up," and is not a reference to the spring season.

Actually, every month, "spring tides" occur when the moon is full and new. [...] "Neap tides," on the other hand, occur when the moon is at first and last quarter [...] Tidal forces vary as the inverse cube of an object's distance. This month the moon is 14 percent closer at perigee than at apogee, and so it exerts 48 percent more tidal force during the spring tides of Nov. 14 than during the spring tides near apogee two weeks before and after.
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http://www.space.com/34660-closest-supermoon-full-moon-in-69-years-forecast.html
http://www.space.com/34660-closest-supermoon-full-moon-in-69-years-forecast.html

Labels: Oleg Zabluda

- posted by Oleg Zabluda @ 6:34 PM | permalink | | | technorati | bloglines | feedster

 
Can't Hurry Love: Rare Snail Finds Romance After Global Search
Can't Hurry Love: Rare Snail Finds Romance After Global Search
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Jeremy is a "lefty" snail, meaning his shell swirls counterclockwise and his sex organs are on the left side of his head. He's a mirror image of other members of his species — and he wouldn't be able to mate with normal snails because their reproductive organs wouldn't line up.

He could be one in a million, evolutionary geneticist Angus Davison of the University of Nottingham tells The Two-Way, though scientists are now thinking it's a trait likely found in one out of every 100,000 snails.
[...]
They put out a call asking the public "for its help in finding the lonely mollusc a mate," and spread the word using the hashtag #snaillove. As Popular Science charmingly says, "even snails use online dating."

Almost immediately, Jeremy, who was originally discovered in a London compost heap, became a media sensation in the U.K. and beyond — a "shellebrity," as Davison puts it.

"We didn't really know how big a hope it would be, or the chances of success, to find one," he says. "But it worked — we found two."

The owners of the two possible mates have very different stories. "Both of them are snail enthusiasts. Both think people should know more about snails. But apart from that, nothing in common," Davison adds.

Contestant No. 1: A snail named "Lefty," a pet to a snail enthusiast near Ipswich, U.K. She got in touch as soon as she heard about the appeal, Davison says.

Contestant No. 2: A snail in Majorca, Spain, found by a snail farmer who runs a restaurant that specializes in — you guessed it — snails. The farmer heard about the appeal and then, Davison says, "amazingly a couple of days later, he came across one that coils the other way, in preparing snails prior to them being cooked."

Jeremy has already met Lefty — "you can call it a honeymoon, if you like," Davison says. The two have been observed "flirting, which means "gentle biting," but he says he's "fairly confident that they haven't mated yet."
[...]
Snails are simultaneous hermaphrodites, he says, meaning that they are both male and female at the same time and will "reciprocally fertilize each other" and ultimately each produce offspring.
[...]
The idea is for Jeremy to spend time with Lefty until they have mated — and that'll be clear because the so-called love darts are fairly large structures that will be visible in the tank.

Their offspring will provide an answer to one big question: Will breeding the two snails result in more lefty shells or will their offspring sport clockwise coils?

Even if Jeremy and Lefty find love, Davison says his team is also exploring ways to introduce Jeremy to the snail from Majorca.
"""
http://www.npr.org/sections/thetwo-way/2016/11/10/501585226/cant-hurry-love-rare-snail-finds-romance-after-global-search
http://www.npr.org/sections/thetwo-way/2016/11/10/501585226/cant-hurry-love-rare-snail-finds-romance-after-global-search

Labels: Oleg Zabluda, snaillove

- posted by Oleg Zabluda @ 6:20 PM | permalink | | | technorati | bloglines | feedster