The strong gravitational magnification enabled astronomers to detect faint background sources ... from a distant galaxy or ...

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Look to the east and west after dark this week, and you’ll quickly see two very bright “stars” in the evening ... opposite the sun as seen from Earth. High above the east after dark each ...

His latest effort shows distant stars, city lights on Earth some ... off the small Starlink satellites while orbiting Earth 100+ miles above the space station. After the first Starlink satellites ...

A massive burst of gamma rays produced by the explosion of a star almost two billion light ... to 590 miles (950 kilometers) above Earth’s surface. “It was probably the brightest gamma-ray ...

NASA, in collaboration with George Mason University, is preparing to launch the Landolt NASA Space Mission, a $19.5 million initiative to place an artificial “star” in orbit by 2029.