An astronaut on the International Space Station captured mysterious blue spheres in the sky last year. NASA’s Earth Observatory shared the photo last year, as well, shortly after it was taken ...

But 1.7 billion stars later, there are still no Dyson spheres. ... If we were to cover the space above Earth's atmosphere with solar panels, ...

Although there have been numerous SPHERES investigations held ... " that can robotically attach to aging or non-functioning satellites in geosynchronous orbit approximately 22,000 miles above Earth.

The state of Texas is captured by one of the NASA Expedition 36 crew members aboard the International Space Station, some 240 miles above Earth, using a 50 millimeter lens in this image released on ...

All of the potential Dyson spheres are within 1,000 light years of Earth. The closest one is 466 light years away, or about 2.74 quadrillion miles away. That’s 16 numerals for the curious.

You might think that the most likely place for a NASA astronaut to see an unidentified flying object would be while orbiting Earth or docking with the International Space Station, however one NASA ...