description Herschel Space Observatory Overview
The Herschel Space Observatory is a decommissioned space-based observatory operated by the European Space Agency (ESA). It specialized in observing the far-infrared spectrum of the universe, providing unique insights into star formation, galaxy evolution and the distribution of cold gas. Its observations were particularly valuable for astronomers studying objects obscured from visible light, offering crucial data for understanding cosmic processes. Researchers utilizing Herschel’s data primarily include those investigating astrophysics and cosmology.
help Herschel Space Observatory FAQ
When was the Herschel Space Observatory operational and why did it stop working?
Herschel was launched by the European Space Agency (ESA) on May 14, 2009 and operated until April 29, 2013, when its supply of liquid helium coolant was depleted. Without the cryogenic coolant, its infrared instruments could no longer maintain the extremely low temperatures required for far-infrared observations.
How large was the Herschel Space Observatory's mirror?
Herschel's primary mirror measured 3.5 meters in diameter, making it the largest single mirror launched into space at the time of its mission. This large collecting area was essential for detecting extremely faint far-infrared and submillimeter radiation from distant galaxies and star-forming regions.
Where is the Herschel spacecraft now?
After its mission ended in 2013, ESA placed Herschel into a heliocentric orbit around the Sun, where it will continue to drift indefinitely. The spacecraft is no longer operational, but its extensive archived data continues to be a major resource for astronomers studying star formation, galaxy evolution, and the interstellar medium.
What were the key scientific discoveries of the Herschel Space Observatory?
Herschel produced comprehensive maps of star-forming regions in the Milky Way and revealed that galaxies in the early universe were forming stars at rates far higher than previously understood. It also detected water vapor in a variety of cosmic environments, including in the atmosphere of Jupiter's moon Ganymede and around a young star.
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