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Cosmologists

Black hole paradox remains unexplained

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Albert Einstein’s groundbreaking ideas about relativity are almost a century old, but recent science is challenging the boundaries of the theory. Joseph Polchinski’s theory of what would happen if a person enters a black hole contradict predictions made with Einstein’s model, and have yet to be refuted.

NASA’s Kepler Spacecraft Will Never Search for Planets Again

Albert Einstein’s archives going online

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Albert Einstein’s Documents Going Online

Podcast: Stephen Hawking on the Future of Humankind

The World

Adam G. Riess on his Nobel Prize

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Adam G. Riess discusses the honor and explains what dark energy is, and why it’s important to the universe.

The World

Are we really alone in the universe?

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Using the Kepler space observatory, which he helped to design with a team of scientists, Dimitar Sasselov has found over 700 planets that meet earth-like criteria and could even sustain human life. He explains his findings.

The World

Eleven things everyone should know about Hubble, courtesy of a 15-year-old astronomer

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This month, the Hubble Telescope celebrates twenty years in space. Why should we care? And does an orbiting telescope matter to those of us who aren’t scientists?

The World

Kepler is on the hunt for planets like Earth

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On Friday, NASA is set to launch a giant telescope called Kepler into outer space. Kepler will orbit the sun and sweep it’s camcorder-like lens across the Milky Way, looking for planets like Earth, that can sustain life.

The World

Geo answer

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For our Geo Quiz we wanted to know the birthplace of the astronomer Johannes Kepler. He was born in Weil der Stadt in southern Germany in 1571. NASA is launching a space mission named after Kepler tonight. The World’s David Leveille reports.