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Issue #11 (April 2015)


Hubble’s Top 100 images

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Vocabulary • Focal Length: ​The distance between a curved mirror and its Focal Point • Focal Point: The position where all reflected light inside the telescope focuses to a point of light • Focal Surface:​ The place where the Focal Point converges to • Primary Mirror: The larger of the two curved mirrors that reflect …

Servicing Mission 1 STS-61 Endeavour • December 2-13, 1993 Servicing Mission 1, launched in December 1993, was the first opportunity to conduct planned maintenance on the telescope. In addition, new instruments were installed and the optics of the flaw in Hubble’s primary mirror was corrected. After Hubble’s deployment in 1990, scientist realized that the telescope’s …

For a mission that was almost never to be, STS-125 will be remembered in years to come as a resounding success story, one of NASA’s great missions and a tribute to the ingenuity of engineers and astronauts alike. Rejuvenating the world’s most famous telescope and setting it free to make more scientific discoveries the mission …

Whilst looking closely at a massive elliptical galaxy and its associated galaxy cluster MACS J1149+2223 — whose light took over 5 billion years to reach us — astronomers have spotted a strange and rare sight. The huge mass of the galaxy and the cluster is bending the light from a much more distant supernova behind …