Explore these orbiting pioneers and learn what they've discovered. 3 min read The Hubble Space Telescope was designed to free astronomers of a limitation that has plagued them since the days of ...

Telescopes orbiting Earth can peer billions ... "It's a tough place to work," said Phil Puxley, of the National Science Foundation. "The air pressure there is almost 50 percent that at sea level ...

Interstellar dust clouds and inky stretches of deep space can appear dull to ordinary telescopes. But to a car-size telescope 26 million miles (41.8 million kilometers) from Earth, they are alive ...

They delved into the telescope's guts during long space walks and replaced parts that the original designers never thought they'd need to. Installation of a new power-control unit forced an ...

Help them make a telescope to explore this important microhabitat Cut one of the paper towel tubes lengthwise (all the way up the side). Tuck one edge of the cut side slightly under the other and ...

This story appears in the July 2009 issue of National Geographic magazine. When you start stargazing with a telescope, two experiences typically ensue. First, you are astonished by the view ...

With next-generation telescopes, tiny space probes ... This story appears in the March 2019 issue of National Geographic magazine. In her office on the 17th floor of MIT’s Building 54, Sara ...

This story appears in the February 2017 issue of National Geographic magazine ... forming two “eyelids.” A telescope in Chile called the Atacama Large Millimeter/submillimeter Array, or ...

This story appears in the May 2018 issue of National Geographic magazine ... The survey, which launches in 2020, will employ telescopes in the Northern and Southern Hemispheres to scan the ...