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Mars Express spacecraft shows a region of Mars.
In 1572, Astronomer Tycho Brahe witnessed the supernova that created the stellar remnant Cassiopeia A. All that remains from this powerful explosion is a cloud of debris expanding away from a Neutron star. New images from NASA's Spitzer space telescope show that this neutron star isn't out of action yet, though, in fact, it might have fired out a blast of energy 50 years ago, which is now lighting up the surrounding material. This recent activity might mean that the neutron star is actually an exotic magnetar, which regularly release bursts of gamma rays.
NASA's Deep Impact is now only a few weeks away from its target, Comet Tempel 1, which it's due to strike on July 4. During the morning of July 3, the spacecraft will deploy its 1 metre (39 inch) impactor which will then guide itself to collide with the comet. Deep Impact will fly 500 km (310 miles) below the Comet and capture every moment of the collision with its instruments. The spacecraft will have 13 minutes to take pictures and transmit them back to Earth before it enters a hail of particles from the comet's nucleus.
This image, taken by the European Space Agency's Mars Express spacecraft shows a region of Mars' Valles Marineris canyon system called Coprates Catena and Coprates Chasma - roughly at the centre of the gigantic gash. This photograph is a perspective view, calculated by the terrain imaged by Mars Express. scientists are sure what caused the Valles Marineris, but some believe that the formation of the Tharsis uplift and volcanoes, west of the canyon caused this area to fracture.
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