With just binoculars, says Stephen J. O'Meara, you can explore the solar system and see all the major planets, rings of Saturn, the moons of Jupiter and much more.
"One of the most important things about exploring space is that it is something that sets us apart in this time that makes history for our nation and for our society," says Alan Stern.
A supermassive black hole - with a mass of perhaps a billion suns - could be ejected from its galaxy under special conditions when two black holes merge.
Mars' tiny moon Phobos has created a big stir among astronomers with the fly-bys of the Mars Express Spacecraft of the European Space Agency in early 2010.
"The Hubble Space Telescope has literally changed our view of the universe," said NASA astrophysicist Ed Weiler. April 2010 marks its 20th anniversary.
This event on the sun can knock out satellites and interfere with earthly communications. It can result in magnificent auroras - the famous northern or southern lights. Be alert in the coming days ...