Space cannon to shoot payloads into orbit (w/ Video)

(PhysOrg.com) -- A physicist has proposed using a 1.1 km (3,600 ft) cannon to deliver cargo into orbit, and says the cost would be around $250 per pound, a massive saving on the $5,000 per pound ($11,000 per kg) it currently ...

Every way devised to deflect an asteroid

With asteroid 2005 YU55 passing close by Earth yesterday, this rather unsettlingly near flyby has many people wondering if we would be able to divert an asteroid that was heading for an intersection with Earth in its orbit. ...

Russia eyes caves on moon for setting up a lunar base

For the time being, it appears NASA has set aside any ambitions to return to the Moon with human missions. But Russia may consider sending cosmonauts to the lunar surface to set up a colony using natural caves and possible ...

Scientists create first free-standing 3-D cloak

Researchers in the US have, for the first time, cloaked a three-dimensional object standing in free space, bringing the much-talked-about invisibility cloak one step closer to reality.

Reconnecting with nature key for sustainability

People who live in more built up areas and spend less free-time in nature are also less likely to take actions that benefit the environment, such as recycling, buying eco-friendly products, and environmental volunteering.

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