In 2007 China successfully destroyed one of their own aging polar-orbiting weather satellites just so they could prove they could. Debris from the destroyed satellite collided with Russia's BLITS satellite in 2013, resulting in thousands of pieces of new space debris and is considered the most prolific and severe fragmentation in the course of five... Continue Reading →
Yes, of course. One example rarely considered is the Oort Cloud, pictured below. The Oort cloud is thought to contain objects that occasionally become dislodged to become long-period comets. It surrounds us like a giant sphere, well beyond Neptune and any known planets.
How can you explain how we see the moon during the day to your teacher? The moon is visible in daytime because the apparent brightness (m) of reflected sunlight off the surface of the moon essentially exceeds the brightness of the blue sky, unlike the stars. That’s your simple answer. Apparent brightness is the brightness... Continue Reading →
If you are wanting to think outside the box you might want to look at the Chinese space plans to launch a manned mission to Mars by 2020, at least according to CNN. If true, China will be the first ones to put footprints on Mars.