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Space

Submission + - Europe to launch two space telescopes today

TorKlingberg writes: As the Hubble is being repaired, the European Space Agency is about to launch two new space telescopes in an Ariane 5 rocket from the Guiana Space Centre at 15:12 CEST (09:12 EDT) today. Herschel is an infrared telescope with the largest mirror ever deployed in space at 3.5 m diameter. It can see further in the far-infrared than any previous mission and requires liquid helium to cool the instruments to under 2 Kelvin. The smaller Planck will study the cosmic microwave background over the entire sky.

Unlike Hubble there can be no repair missions as the telescopes are going to the L2 Lagrangian point 1.5 million km (1 million miles) from Earth in the opposite direction of the sun. The launch will be streamed live online.

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