For a few evenings around 28 February, every planet in the solar system will be visible in the night sky, thanks to a rare great planetary alignment. Here's how to make sure you don't miss this ...

3 min read Solar energy is the technology used to harness the sun's energy and make it useable. As of 2011, the technology produced less than one tenth of one percent of global energy demand.

But turning our nine-planet solar system into eight just earned Pluto more fans. This year also marks the 10th anniversary of Pluto's first dedicated flyby mission. NASA’s New Horizons ...