ACEIZE Tracking the current state of Science and Technology

At the completion of the 5th and final spacewalk, the moment came when human hands had touched Hubble for the last time. The STS-125 crew left the telescope ready to dazzle the world for years to come, with more scientific discoveries and stunning images now possible because of its improved view that stretches from our solar system to the far reaches of the universe. Astro Mike, as he became known on Twitter, said "Just saw Orion’s nebula in the night sky -- the sights make all the hard work and risk worthwhile for me."

Upgrades Include:
- Wide Field Camera 3 - Hubble's new panchromatic camera will allow astronomers to better observe galaxy evolution, dark matter and dark energy.
- Cosmic Origins Spectrograph - The most sensitive spectrograph ever flown on Hubble, the new instrument will peer further into the universe than ever before in the near and far ultraviolet ranges.
- Advanced Camera for Surveys - Now repaired, it's one of Hubble's primary cameras, which stopped working in 2007. It's responsible for some of the most famous images from Hubble.
- Space Telescope Imaging Spectrograph - Inoperable since 2004, the repaired instrument reveals information about planets, comets, stars and galaxies.
Science Instrument Command and Data Handling System - Replacement of the unit that failed in September 2008, returns full function for sending information and receiving commands.
- Fine Guidance Sensor 2 - Replaced, it is one of three sensors that help point and lock the telescope on targets.
- Rate Sensor Units - The six new gyroscopes in these units work with the Fine
Guidance Sensors to help precisely point the telescope.
- Battery Module Units - Replaced, they power Hubble when the solar arrays are out of the sun's reach

Source: NASA