Free Republic 1st Qtr 2024 Fundraising Target: $81,000 Receipts & Pledges to-date: $74,893
92%  
Woo hoo!! And we're now over 92%!! Thank you everyone!! God bless.

Keyword: impactcraters

Brevity: Headers | « Text »
  • Crater Could Solve 1908 Tunguska Meteor Mystery

    06/27/2007 6:16:57 PM PDT · by raygun · 52 replies · 2,353+ views
    Space.com ^ | 06:27 26 June 2007 ET | By Dave Mosher - Staff Writer
    In late June of 1908, a fireball exploded above the remote Russian forests of Tunguska, Siberia, flattening more than 800 square miles of trees. Researchers think a meteor was responsible for the devastation, but neither its fragments nor any impact craters have been discovered. Astronomers have been left to guess whether the object was an asteroid or a comet, and figuring out what it was would allow better modeling of potential future calamities. Italian researchers now think they've found a smoking gun: The 164-foot-deep Lake Cheko, located just 5 miles northwest of the epicenter of destruction. "When we looked at...
  • Prospecting for Oil? Look In an Asteroid Crater

    10/07/2006 6:33:48 PM PDT · by Fred Nerks · 88 replies · 2,182+ views
    space.com website ^ | 14 December 1999 | By Michael Paine
    The Earth has suffered thousands of violent collisions with asteroids and comets over the last four billion years. The scars from these collisions are impact craters. But the Earth hides its wounds well -- less than two hundred impact craters have been discovered. Many are buried deep below the surface. They were only found by accident during geological surveys that were part of the massive, ongoing effort to find oil for an energy-dependent world. If Russian theories about the non-biological origin of much of our oil prove to be accurate, then there may be good reasons for oil prospectors to...
  • BIG BANG IN ANTARCTICA -- KILLER CRATER FOUND UNDER ICE

    06/01/2006 2:26:58 PM PDT · by PatrickHenry · 255 replies · 6,436+ views
    Ohio State University ^ | 01 June 2006 | Staff (press release)
    Ancient mega-catastrophe paved way for the dinosaurs, spawned Australian continent. Planetary scientists have found evidence of a meteor impact much larger and earlier than the one that killed the dinosaurs -- an impact that they believe caused the biggest mass extinction in Earth's history.The 300-mile-wide crater lies hidden more than a mile beneath the East Antarctic Ice Sheet. And the gravity measurements that reveal its existence suggest that it could date back about 250 million years -- the time of the Permian-Triassic extinction, when almost all animal life on Earth died out.Its size and location -- in the Wilkes Land...