An image of the solar eclipse from Australia taken from space by NASA’s Deep Space Climate Observatory (DSCOVR).

Skylab was launched in 1973. The first space station was Salyut 1, launched by the Soviet Union in 1971. But it was a failure. Later America comes with Skylab. Skylab was a huge success. But Skylab only had the setup...

In a three-phase process in which four hydrogen atoms combine to form a helium nucleus, the Sun converts about 600 million metric tons of hydrogen per second to 596 million metric tons of helium. Then that depleted four million metric...

Over the decades, Delta IV Heavy rockets have been instrumental in space exploration. Starting in 1960, the Delta Rocket family, with its 400-plus missions, saw the latest Delta IV Heavy rocket lift off last week, marking its final journey. As...