Why do some space telescopes have to be cooled?
World's largest infrared space telescope shuts down forever
Herschel Space Observatory - PACS - Institute of Astronomy
Herschel space telescope closes its eyes on Universe - Times of India
Herschel Space Telescope Archives - Universe Today
ESA - The largest infrared space telescope
The Herschel Satellite – Herschel Space Observatory
HSO (Herschel Space Observatory) - eoPortal
Spaceflight Now | Breaking News | Herschel observatory goes dark after four-year mission
Herschel Space Observatory - Wikipedia
Andromeda Galaxy – Herschel Space Observatory
Observatory detects first water in distant galaxy - EE Times
NRL part of multinational team that launches | EurekAlert!
Herschel Space Observatory - Infrared Space Telescope
The James Webb Space Telescope | Multiwavelength Astronomy
Herschel telescope revisits cosmic classic - BBC News
Herschel Space Observatory
Images From ESA's Herschel Telescope
ESA - Herschel closes its eyes on the Universe
SPACE: Herschel and Planck telescopes infographic
ESA's Herschel Space Observatory Runs Out of Helium - SpaceRef
ESA Science & Technology - How Herschel unlocked the secrets of star formation
Herschel Space Observatory
