It Comes From Space to Solve our Energy Problems

GreenFuel Technologies Corporation, a start-up company in Cambridge Massachusetts, wants to use little green algae to cleanse the smoke from polluting smokestacks, converting it back into bio-fuels such as diesel or ethanol.

Interstellar Spaceflight: Is It Possible?

With current space travel limited to just a few robotic probes visiting nearby planets, how realistic is it to think about reaching the nearest stars? For the short term, not very – especially when we speak of manned missions. ...

Manned vs. Unmanned Space Exploration (Part 2)

Watching the Apollo landings on the moon as a child I could hardly have imagined I was seeing the end of an era – that of manned exploration of space. Shuttle trips to low earth orbit not withstanding; the human race has ...

Manned vs. Unmanned Space Exploration (Part 1)

Watching the Apollo landings on the moon as a child I could hardly have imagined I was seeing the end of an era – that of manned exploration of space. Shuttle trips to low earth orbit not withstanding; the human race has ...

How to find a black hole

Black holes. Just the name evokes mystery and intrigue. But do they really exist? Scientists have discovered at least 20 objects in 20 different galaxies that are potential black holes and may contain event horizons. A black ...

Astronomers deliver first photo of black hole

Astronomers on Wednesday unveiled the first photo of a black hole, one of the star-devouring monsters scattered throughout the Universe and obscured by impenetrable shields of gravity.

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