<div class = "article-block article-text" data-behavior = "newsletter_promo dfp_article_rendering" data-dfp-adword = "Advertisement" data-newsletterpromo-text = "
Sign up for American ScienceWeb newsletters.
"data-newsletterpromo-image =" https://static.scientificamerican.com/sciam/cache/file/2B640CA5-9C17-4DAA-B7ADA90BA426F31E_source.png "data-newsletterpromo-button-text =" Sign up "data-information clip-button -link = "https://www.scientificamerican.com/page/newsletter-sign-up/?origincode=2018_sciam_ArticlePromo_NewsletterSignUp" itemprop = "articleBody">
The Hubble Space Telescope was launched in the Earth's orbit in 1990 for 25 years. Spitzer Telescope Spitzer, Hubble's infrared sister, has just celebrated its 15th anniversary in space. Multiple X-ray observations, including the Chandra X-ray Observatory, XMM-Newton, and the Nuclear Speech Telescope Array (or NuSTAR) are also investigating the sky from their poles in space, high above the ground here on the Earth. In the coming decade, NASA plans to launch the James Webb Space Telescope, the next generation Hubble and Spitzer, which will orbit the Sun.
Putting a telescope in space has its limitations. For beginners, it can not be too big because it must fit within the rocket that fills it. Our ability to repair it also equally limits (sticks wood) anything badly. And finally, to show the evidence, it's pretty expensive. So why should we even do it?
The main reason why we put telescope into space is to surround the Earth's atmosphere so that we can get a clearer vision of the planets, stars and galaxies we are studying. Our atmosphere acts like a protective blanket leaving just a bit of light through blocking others. Most of the time this is a good thing. No SPF level could protect us if we were bombarded by high energy X-ray or gamma rays when we went out. But this protection means that we are in luck when it collects these forms of light for basic studies. We can not exactly ask the atmosphere to make special exceptions for the light we hope to reach our telescope.
»Continue reading" Why We Put Telescope in Space "on QuickAndDirtyTips.com