The first image of the whole Earth from space came in 1972, when astronauts Ron Evans or Harrison Schmitt took a photo from onboard Apollo 17 while headed to the Moon. This was the first time that an ...

The SPHEREx mission will map the universe in both optical and near-infrared light. In the month since arriving at its orbit ...

Meanwhile, astronomers are keeping watch for a rare nova—a sudden explosion of a distant star—that could appear to the naked eye sometime in the coming months. When it happens, the nova will ...