Space junk created the world’s largest dump. Here’s how we can fix it.
From “laser brooms” to massive nets, space organizations have proposed many ways to clean up the mess of space debris.
Space ads could earn $2 million a day, say Russian researchers
Space advertising could generate a profit, even though space ads would cost $65 million each, according to Russian researchers’ calculations.
Einstein’s theory of general relativity passes another test, with implications for dark matter and dark energy
Scientists carried out an ultra-precise test of a core premise of Einstein’s modern theory of gravity. The theory stood up.
The technology we (or aliens) need for long-distance interstellar travel
Interstellar distances are vast, and extremely advanced technology will be required if we (or aliens) want to visit other star systems.
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