The Andromeda is a spiral galaxy approximately 2.5 million light-years from Earth. It is one of the few galaxies that can be seen from earth without a telescope. It is the nearest major galaxy to the Milky Way. The Andromeda Galaxy is approaching the Milky Way at approximately 100 to 140 kilometers per second and in approximately 4.5 billion years they are expected to collide. The Andromeda Galaxy has at least one super massive black hole hidden at it's core. The fate of the Earth and the Solar System in the event of a collision is currently unknown. Before the galaxies merge, there is a chance that the Solar System could be ejected from the Milky Way or join the Andromeda Galaxy.
Mars has been testing helicopters that they plan to send to Mars next year. NASA's mars helicopter successfully completed a series of flight tests that were performed on Earth. It is set to touch down on Mars as early as 2021.
Did you know that sunsets on Mars are blue instead of red? The heavy dust particles from the planet block out most of the sun's light. Blue light pushes better through the atmosphere.
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