- Aug 24, 2001
- 31,796
- 2
- 0
Originally posted by: FoBoT
don't waste this thread, post something else
Ok, take your pick.
Comet Bigger than the Sun
A comet that has delighted backyard astronomers in recent weeks after an unexpected eruption has now grown larger than the sun.
The sun remains by far the most massive object in the solar system, with an extended influence of particles that reaches all the planets. But the comparatively tiny Comet Holmes has released so much gas and dust that its extended atmosphere, or coma, is larger than the diameter of the sun. The comparison is clear in a new image.
"It continues to expand and is now the largest single object in the solar system," according to astronomers at the University of Hawaii.
The coma's diameter on Nov. 9 was 869,900 miles (1.4 million kilometers), based on measurements by Rachel Stevenson, Jan Kleyna and Pedro Lacerda of the University of Hawaii Institute for Astronomy. They used observations from the Canada-France-Hawaii Telescope. The sun's diameter, stated differently by various sources and usually rounded to the nearest 100, is about 864,900 miles (1.392 million kilometers).
or
Oral Sex Gene Isolated?
Men may be intrigued to hear that researchers have pinpointed a gene that makes females suck up sperm through their mouths.
The gene was found in the cichlid fish, where the males have evolved a way to lure females close so that they can squirt sperm into their mouths.
As is the case in many fish species, the sight of a brightly coloured male somehow triggers females with ripe eggs to start releasing them. But in cichlids, there is a twist. Females hold their eggs in their mouths and incubate them there after fertilisation ? a behaviour that is thought to have evolved to protect the eggs from predators.
As soon as a female has spawned her eggs, she collects them up in her mouth. Normally, sperm released into the water by a male nearby will then fertilise the eggs.
But males of certain cichlid species in east Africa have evolved a way to increase the odds that females take up their sperm. Oval yellow markings resembling the eggs are found on the anal or pelvic fins. When a female approaches the male, she thinks she sees an egg on its fin, so tries to vacuum it up in her mouth ? and get a mouthful of sperm from the canny male in the process
