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Scientists work to keep NASA's space telescope in the dark

Scientists work to keep NASA's space telescope in the dark

Science
Sept. 12 (UPI) -- NASA scientists are taking on the vital task of ensuring unwanted infrared light does not interfere with the optical testing of the James Webb Space Telescope."One of the challenges of testing an infrared telescope is that room-temperature objects [such as the walls of the vacuum chamber itself, or the warm electronics systems inside it] glow at the wavelengths of light that the telescope is trying to measure," Randy Kimble, a scientist at NASA's Goddard Space Flight Center in Greenbelt, Md., said in a press release. "If not carefully controlled, that warm glow can provide an unwanted background in the telescope's images, which would compromise the optical testing."Due to the telescope's extreme sensitivity to infrared light, scientists are using a cold, gaseous helium sh...
Last chance to suggest NASA's message to Voyager 1

Last chance to suggest NASA's message to Voyager 1

Technology
It's the final day for internet users to suggest a message for NASA to beam to the Voyager 1 space probe.The craft is currently almost 13 billion miles from Earth - making it the most distant human-made object ever.It was launched on 15 September 1977 and in order for a message to be beamed to it in time for the 40th anniversary of the mission, NASA is closing the date for suggestions on Tuesday.The space agency is seeking suggestions via Twitter, Instagram, and Facebook for a 60-character message to send to the unmanned Voyager 1.At the end of the entry period, the public will be allowed vote on what short message should be sent to the probe.Public polls can be a risky business in the age of the internet, with the public last year opting to name the UK's new polar research ship Boaty McBo...
NASA's Solar Dynamics Observatory sees sunspot turn toward Earth

NASA's Solar Dynamics Observatory sees sunspot turn toward Earth

Science
July 12 (UPI) -- NASA's Solar Dynamics Observatory, a space probe dedicated to the study of the sun, has captured footage of a sunspot rotating towards Earth.Sunsports are patches on the surface of the sun that appear darker than their surroundings due to the loss of surface tension caused by magnetic flux, an intense concentration of complex magnetic fields.Sunspots are relatively common, but as the sun approaches the solar minimum -- the least active part of its 11-year cycle -- the frequency of sunspots decreases. The sunspot filmed by SDO this week was the first seen in two days. It is currently the only visible sunspot on the surface of the sun.While sunspots appears to be quite small, the newly released video from NASA shows the patch of intensive electromagnetic activity is actually...