Kepler space telescope | Wikipedia audio article
Channel: wikipedia tts
Date: 30/12/2018

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Kepler_(spacecraft)


00:01:23 1 History
00:05:45 2 Spacecraft design
00:07:07 2.1 Camera
00:08:58 2.2 Primary mirror
00:09:56 2.3 Photometric performance
00:11:50 2.4 Orbit and orientation
00:13:43 2.5 Operations
00:14:47 2.5.1 Communications
00:15:37 2.5.2 Data management
00:17:45 2.5.3 Reaction wheel failures
00:18:50 2.6 Operational timeline
00:21:53 3 Field of view
00:23:29 4 Objectives and methods
00:28:43 5 Planet finding process
00:28:53 5.1 Finding planet candidates
00:30:51 5.2 Confirming planet candidates
00:31:42 5.2.1 Through other detection methods
00:35:33 5.2.2 Through validation
00:38:13 6 Mission results
00:38:54 6.1 2009
00:40:22 6.2 2010
00:43:01 6.3 2011
00:48:59 6.4 2012
00:50:44 6.5 2013
00:53:48 6.6 2014
00:56:34 6.7 2015
00:58:52 6.8 2016
00:59:18 7 Mission status
00:59:54 7.1 Extension
01:00:34 7.2 Reaction wheel issues
01:03:25 7.3 Second Light (K2)
01:07:50 8 Data releases
01:08:32 8.1 Follow-ups by others
01:09:15 8.2 Citizen scientist participation
01:11:36 9 Confirmed exoplanets
01:12:52 10 iKepler/i Input Catalog
01:13:25 11 Solar System observations
01:14:34 12 Retirement
01:15:23 13 See also



Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago.

Learning by listening is a great way to:
- increases imagination and understanding
- improves your listening skills
- improves your own spoken accent
- learn while on the move
- reduce eye strain

Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone.

Listen on Google Assistant through Extra Audio:
https://assistant.google.com/services/invoke/uid/0000001a130b3f91
Other Wikipedia audio articles at:
https://www.youtube.com/results?search_query=wikipedia+tts
Upload your own Wikipedia articles through:
https://github.com/nodef/wikipedia-tts
Speaking Rate: 0.9203669134620108
Voice name: en-GB-Wavenet-D


"I cannot teach anybody anything, I can only make them think."
- Socrates


SUMMARY
=======
Kepler is a retired space observatory launched by NASA to discover Earth-size planets orbiting other stars. Named after astronomer Johannes Kepler, the spacecraft was launched on March 7, 2009, into an Earth-trailing heliocentric orbit.  The principal investigator was William J. Borucki. After nine years of operation, the telescope's reaction control system fuel was depleted, and NASA announced its retirement on October 30, 2018.Designed to survey a portion of Earth's region of the Milky Way to discover Earth-size exoplanets in or near habitable zones and estimate how many of the billions of stars in the Milky Way have such planets, Kepler's sole scientific instrument is a photometer that continually monitored the brightness of approx 150,000 main sequence stars in a fixed field of view. These data are transmitted to Earth, then analyzed to detect periodic dimming caused by exoplanets that cross in front of their host star. Only planets whose orbits are seen edge-on from Earth can be detected. During its over nine years of service, Kepler observed 530,506 stars and detected 2,662 planets.