Scientists are keeping a close eye on orbital debris created when two communications satellites — one American, the other Russian — smashed into each other hundreds of miles above the Earth.

NASA said it will take weeks to determine the full magnitude of the unprecedented crash and whether any other satellites or even the Hubble Space Telescope are threatened.

The collision, which occurred nearly 500 miles over Siberia on Tuesday, was the first high-speed impact between two intact spacecraft, NASA officials said.

“We knew this was going to happen eventually,” said Mark Matney, an orbital debris scientist at Johnson Space Center in Houston.

NASA believes any risk to the international space station and its three astronauts is low. It orbits about 270 miles below the collision course.

ABC News: Scientists Eye Debris After Satellite Collision.

Doors reopened: Michelle Obama greets audience members at Ford’s Theatre, which celebrated Abraham Lincoln’s bicentennial.

The Ford’s Theatre Society held a star-studded reopening to celebrate the bicentennial of Lincoln’s birth and award film greats George Lucas and Sidney Poitier with Lincoln Medals. The invitation-only ceremony was held at Ford’s Theatre, where Lincoln was assassinated in 1865.

CBS News anchor Katie Couric and actors Kelsey Grammer, James Earl Jones, Ben Vereen, Jeffrey Wright and Audra McDonald gave a presentation of Birth and Rebirth, a tribute to Lincoln. David Selby (Falcon Crest‘s Richard Channing) portrayed Lincoln. Jessye Norman performed the Battle Hymn of the Republic with McDonald and violinist Joshua Bell. Richard Thomas (The Waltons‘ John Boy) was the evening’s host.

“There’s a lot of history in this building,” said director Lucas, 64. Lincoln “was a great man, and he served our country in a very difficult time.” As for Obama’s first weeks, “it’s nice that he started off on the right foot. Things are actually happening.”

Poitier, 81, was still moved by the election of a black president. “I never thought I would live long enough (to see one), which is an example of how far we’ve come,” the Oscar-winning Lilies of the Field actor said.

Grammer, a Republican, expressed support for Obama. “I support all presidents,” he said. “They have a very difficult job.” And, he said, “it brings a tear to my eye every time I see him on camera.” As for Lincoln, “he gave his life so that a president like Obama could come along.”

Jones, the Great White Hope star and voice of Darth Vader, talked about missing Obama’s inauguration, but added, “I figured I’d meet up with him somewhere along the way.”

Jones was right. At the end of the tribute, Obama spoke to the audience about Lincoln. “He had an unyielding belief that at heart we are one nation and one people. … That is what we remain.”

Ford’s Theatre packs in stars, and Obamas, for reopening

CNN) — A Holocaust denier Pope Benedict XVI welcomed back into the Roman Catholic Church last month has been removed from his position as head of a seminary in Argentina.

Bishop Richard Williamson, shown in a recent Swedish interview, says he’ll recant “if I find this proof.”

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The views of Bishop Richard Williamson, who has led the seminary in La Reja since 2003, do not reflect those of The Society of St. Pius X, said Christian Bouchacourt, head of its Latin American chapter.

“It’s obvious that a Catholic bishop cannot talk with the ecclesiastical authority, but to things related to faith and morality,” Bouchacourt said in a written statement.

Williamson, shortly before the pope lifted his excommunication, denied the Nazis had systematically murdered 6 million Jews during World War II.

In his blog Saturday, Williamson, referring to himself, posted a note, saying, “His Excellency is neither dead, dying, nor retired.”

Earlier Sunday, German Chancellor Angela Merkel phoned Pope Benedict about the issue, though neither side seemed to have shifted its position over Williamson.

“It was a very constructive conversation,” the German government and the Vatican said in a joint statement about the call. Merkel and the pope expressed respect for each other’s opinion, the release said — diplomatic-speak for saying neither side budged.

Merkel demanded Tuesday that the pope firmly reject Holocaust denial.

“The pope and the Vatican must make absolutely clear that there can be no denial of the Holocaust,” Merkel said.

The Vatican has pointed to several statements by Pope Benedict in the past few years condemning the destruction of European Jewry, including his visits to concentration camps. He has also said he did not know of Williamson’s views on the Holocaust when he lifted the excommunication.

“I believe that the historical evidence is strongly against — is hugely against — 6 million Jews having been deliberately gassed in gas chambers as a deliberate policy of Adolf Hitler,” Williamson said recently in an interview with a Swedish television station, which also appeared on various Web sites after its broadcast. “I believe there were no gas chambers.”

Germany’s Catholic bishops Saturday called for the expulsion of Williamson, a member of an ultra-conservative group expelled from the Church by Pope John Paul II in 1988.

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Holocaust denier removed as head of Argentine seminary – CNN.com.

Obama Sends Vice President to Build Bridges

US Vice President Joe Biden is the star guest at the Munich Security Conference this weekend. His speech on Saturday is supposed to form the basis of the new trans-Atlantic partnership. Instead of concrete pledges, experts await a bid to mend ties between Europe and the US.

It’s been little over three weeks since Joe Biden became deputy to the most powerful man in the world and he still hasn’t grown into his new role. The former senator can be seen at the State Department discussing foreign policy or dining with President Barack Obama in the White House. Sometimes he presents himself as a champion of the middle classes, at other times he appears in shirtsleeves at on a railway platform pleading for investment in infrastructure. “It is hard now,” he admitted in a recent TV interview. “What I have to think now is, everything I say, I am the vice president. I am not the president. So everything I say reflects directly on the administration.”

REUTERS

US President Barack Obama (L) and Vice President Joe Biden.

This Saturday Biden will be speaking explicitly on behalf of the United States. His speech at the Munich Security Conference will be the vice president’s first major international appearance — and the Bavarian capital is rolling out the red carpet for him. The conference organizers promise that his speech will provide the impetus for a new start in trans-Atlantic relations.

What are the expectations for the speech? “The tone is the message,” Laurie Dundon, who previously worked with former Secretary of State Madeleine Albright and is now at the Bertelsmann Foundation in Washington, told SPIEGEL ONLINE. “The right words would define the parameters for future cooperation, just as preparations are being made for Obama’s Europe trip at the beginning of April to the G-20 summit in London and the NATO summit in Kehl and Strasbourg.”

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Biden at the Munich Security Conference: Obama Sends Vice President to Build Bridges – SPIEGEL ONLINE – News – International.