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Sat, 28 Nov 2020
The World for People who Think



Did A Comet Hit Great Lakes Region, Fragment Human Populations, 12,900 Years Ago?

Two University of Oregon researchers are on a multi-institutional 26-member team proposing a startling new theory: that an extraterrestrial impact, possibly a comet, set off a 1,000-year-long cold spell and wiped out or fragmented the prehistoric Clovis culture and a variety of animal genera across North America almost 13,000 years ago.


Green Comet Lovejoy Enters Solar System From Below

Comet Lovejoy, discovered just last week by Terry Lovejoy of Thornlands, Australia, is on its way into the solar system. The existence of this lovely green comet was confirmed by John Drummond of Gisborne, New Zealand.


New Comet Discovered - It's Green - 'Comet Lovejoy'

There's a new comet in the southern hemisphere: Comet Lovejoy (C/2007 E2). Terry Lovejoy of Australia discovered it on March 15th using, remarkably, not a telescope but only an off-the-shelf digital camera. The green comet is too dim to see with the naked eye, but it is a nice target for backyard telescopes. After five days of monitoring, the comet's orbit is now known with some accuracy and it is possible to make predictions about Comet Lovejoy's future movements and brightness. Details.


Scientist: Comets blasted early Americans

COLUMBIA, S.C. - A supernova could be the "quick and dirty" explanation for what may have happened to an early North American culture, a nuclear scientist here said Thursday.

Richard Firestone said at the "Clovis in the Southeast" conference that he thinks "impact regions" on mammoth tusks found in Gainey, Mich., were caused by magnetic particles rich in elements like titanium and uranium. This composition, the Lawrence Berkeley National Laboratory scientist said, resembles rocks that were discovered on the moon and have also been found in lunar meteorites that fell to Earth about 10,000 years ago.


Finding what's left after the killer comet

The comet that killed the dinosaurs opened the evolutionary door for one of Earth's most diverse groups of creatures: mammals. David Archibald, Ph.D., a professor of evolutionary biology at San Diego State, has made this transition from dinosaurs to mammals his expertise.

Archibald studies early mammalian fossils and is trying to constrain the origins of the phylum to which humans belong. His research has taken him around the world in search of the remains of terrestrial creatures.

Magic Wand

Chile's Skies Light Up This Weekend With Comet Mcnaught

Look to the western sky this weekend and see what is being called the most brilliant comet to grace the space around Earth since 1965. Comet McNaught will be visible from most of Chile for the next few days, so hope that the current cloud cover will disappear and set the stage for a beautiful cosmic experience.

Bizarro Earth

Dwarf planet 'becoming a comet'

An unusual dwarf planet discovered in the outer Solar System could be en route to becoming the brightest comet ever known.

Bizarro Earth

Brightest comet in 40 years in Australian skies

THE brightest comet in Australia's skies for more than 40 years will be visible from Jan 15th, astronomers have said.

Dr James Biggs, director of the Perth Observatory, said the McNaught Comet is currently at its closest approach around the Sun and will be visible to West Australians from Monday 15th for about a week.

"It should be easy to locate. Find a vantage point with an unobstructed view and look low on the horizon near where the Sun has set, in the direction of south-west, around 9pm (WDT)," Dr Biggs said.


Scotland: 'Fireball' calls blamed on comet

A major Royal Navy and police search carried out near Dumfries has been blamed on sightings of a comet.

The alert was raised at about 1700 GMT on Friday when police operators started receiving calls about a "burning light" spotted above the town.

The comet is believed to have sparked a string of calls to police

Magic Wand

Comet McNaught likely to outshine planet Venus

Cometary experts have calculated that the orbit of Comet McNaught should come as near as 15.8 million miles (25.4 million kilometers) from the Sun (what is called perihelion) on January 12, 2007. Thus, its brightness should peak on that date. At that time, it could be tens of times brighter than the planet Venus.