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Mr. Charlie · 02-15-2016, 08:00 AM

Horizon: Swallowed by a Black Hole

In summer 2013, the black hole at the centre of the Milky Way was getting ready to feast.

A gas cloud three times the size of our planet strayed within the gravitational reach of our nearest supermassive black hole. Across the globe, telescopes were being trained on the heart of our galaxy, some 27,000 light years from Earth, in the expectation of observing this unique cosmic spectacle.

For cosmic detectives across the Earth, it was a unique opportunity. For the first time in the history of science, they hoped to observe in action the awesome spectacle of a feeding supermassive black hole.

BBC iPlayer - Horizon - 2012-2013: 15. Swallowed by a Black Hole

Pretty good watch.

The Sky at Night: Planet 9 From Outer Space

On January 20 2016, two American astronomers made an extraordinary claim - they had found evidence for a ninth planet in our solar system, a planet 20 times further out than Neptune which would take up to 20,000 years to orbit the sun. It is a discovery that could completely rewrite our understanding of our solar system and how it formed.

As the world's biggest telescopes start scanning the skies searching for Planet 9, the Sky at Night team investigates. If Planet 9 exists, where is it and where did it come from?

In California, Chris Lintott meets the astronomers whose study of the distant Kuiper Belt led them to predict the existence of the planet. And while some scientists are still sceptical, Maggie Aderin-Pocock discovers how our models of the formation of the solar system and the discovery of similar exoplanets around other stars all support the existence of Planet 9.

BBC iPlayer - The Sky at Night - Planet 9 from Outer Space

Excellent. Enjoyed this a lot.

02-15-2016, 08:00 AM	#3992 (permalink)
Mr. Charlie Shoo Thoughts Join Date: Oct 2013 Location: These Mountains Posts: 2,308	Horizon: Swallowed by a Black Hole In summer 2013, the black hole at the centre of the Milky Way was getting ready to feast. A gas cloud three times the size of our planet strayed within the gravitational reach of our nearest supermassive black hole. Across the globe, telescopes were being trained on the heart of our galaxy, some 27,000 light years from Earth, in the expectation of observing this unique cosmic spectacle. For cosmic detectives across the Earth, it was a unique opportunity. For the first time in the history of science, they hoped to observe in action the awesome spectacle of a feeding supermassive black hole. BBC iPlayer - Horizon - 2012-2013: 15. Swallowed by a Black Hole Pretty good watch. The Sky at Night: Planet 9 From Outer Space On January 20 2016, two American astronomers made an extraordinary claim - they had found evidence for a ninth planet in our solar system, a planet 20 times further out than Neptune which would take up to 20,000 years to orbit the sun. It is a discovery that could completely rewrite our understanding of our solar system and how it formed. As the world's biggest telescopes start scanning the skies searching for Planet 9, the Sky at Night team investigates. If Planet 9 exists, where is it and where did it come from? In California, Chris Lintott meets the astronomers whose study of the distant Kuiper Belt led them to predict the existence of the planet. And while some scientists are still sceptical, Maggie Aderin-Pocock discovers how our models of the formation of the solar system and the discovery of similar exoplanets around other stars all support the existence of Planet 9. BBC iPlayer - The Sky at Night - Planet 9 from Outer Space Excellent. Enjoyed this a lot.