The Kepler spacecraft and its Delta II rocket have been cleared to launch into space at 10:49 p.m. EST Friday night. Its mission; watch a patch of space (see image below) for the next 3.5 years and look for signs of Earth-sized planets moving around stars similar to the sun. The area that Kepler will watch contains around 100,000 stars like the sun and Kepler will look for slight dimming in the stars as planets pass between the star and Kepler. Unlike observatories like Hubble, Kepler will be able to watch the same stars constantly throughout its mission.
Here are 5 quick facts, courtesy of JPL:
(1) Kepler is the world's first mission with the ability to find true Earth analogs -- planets that orbit stars like our sun in the "habitable zone." The habitable zone is the region around a star where the temperature is just right for water -- an essential ingredient for life as we know it -- to pool on a planet's surface.
(2) By the end of Kepler's three-and-one-half-year mission, it will give us a good idea of how common or rare other Earths are in our Milky Way galaxy. This will be an important step in answering the age-old question: Are we alone?
(3) Kepler detects planets by looking for periodic dips in the brightness of stars. Some planets pass in front of their stars as seen from our point of view on Earth; when they do, they cause their stars to dim slightly, an event Kepler can see.
(4) Kepler has the largest camera ever launched into space, a 95-megapixel array of charge-coupled devices, or CCDs, like those in everyday digital cameras.
(5) Kepler's telescope is so powerful that, from its view up in space, it could detect one person in a small town turning off a porch light at night.
Image credit: NASA/JPL
- PHYSICAL SCIENCES
- EARTH SCIENCES
- LIFE SCIENCES
- SOCIAL SCIENCES
Subscribe to the newsletter
Stay in touch with the scientific world!
Know Science And Want To Write?
- Anomaly! Book Of The Week At Times Higher Education
- Random Thoughts Of A Physicist In Honeymoon
- How Wind Turbines Work - A Legal Perspective
- It's Been Another Record Year For Agriculture - When Do Climate Change Forecasts Come True?
- Climate Change Made The Sahara Green - Then Took It Away Again
- Sitting Linked To Premature Aging - And Hopefully Skepticism
- Future Train Wreck: Mine or Modern Physics talk Next Thursday, Jan. 26
- "I don't know why my comment's formatting was lost in the transmission, so that it is now one big..."
- "“If you don't use probabilities then how else do you do it? At any rate that's not a criticism..."
- "Tomasso, Congratulations, may you enjoy a long and happy life together with Kalliopi! Best regards..."
- "Found another one : http://www.dailystar.co.uk/news/latest-news/545975/end-of-the-world-Gods-vengeance..."
- "Thanks :). Actually there are so many fake doomsday red top tabloid stories that I tend to wait..."
- A Drug 85 Times More Potent than THC Caused 'Zombie Outbreak' in New York City
- Doubt Cast Over Sunscreen-Vs.-Shade Study
- ABCD: Obesity Has A New Name, Will It Stop The Epidemic?
- President George H. W. Bush in ICU, Wife Barbara in Same Hospital
- Media Think World of Science and Health Will End on Inauguration Day 2017
- And Then There Were Three: A New Trivalent Herpes Vaccine Enters The Scene