Almost everybody think that the Great Wall of China is the only manmade object visible from space. In reality, many human constructs can be seen from Earth orbit. Astronauts can see highways, airports, dams and even large vehicles from an Earth orbit that is about 215 kilometers high. Cities can easily be distincted from surrounding countryside, and that's true even from the higher perch of the International Space Station, which circles the planet at about 400 kilometers up. "You can see an awful lot ... Read More

DARMSTADT, Germany - The European deep space probe Rosetta was successfully completed. Rosseta finished a flyby of an asteroid millions of miles from earth, but its high resolution camera stopped working shortly before the closest pass, space officials said Saturday. Rosetta caught up with the Steins asteroid, also known as Asteroid 2867, just after 8:45 p.m. Friday in the asteroid belt between the orbits of Mars and Jupiter. The probe came within 500 miles of the asteroid. Officials at the European Space Agency were ... Read More