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?
- Erupting Bardarbunga Volcano In Iceland Sits On A Massive Magma Hot Spot
- Genetically Modified Stem Cells Kill Brain Tumors
- Researchers Created A Laser Bullet To See What It Would Look Like - And Here It Is
- How Gut Bacteria Ensure A Healthy Brain – and Could Play A Role In Treating Depression
- Psychiatry Should Switch From Symptom-based Prescriptions To Target-based
- Cold Fusion: A Better Study On The Infamous E-Cat
- Ebola's Evolutionary Roots Are Ancient
- "Both in this article and the press release from ASU Biodesign are carefully worded allusion to..."
- "These are idiotic concerns. Non-steroidal anti-inflammatory drugs aren't always used to treat inflammation..."
- "So 'volcano boarding' is apparently a thing for the well-to-do hipster extreme sports community..."
- "If we had a contest between the USA and UK, perhaps weighted according to population or GDP, which..."
- "Hi Tommaso,I stumbled on this presentation; the plot on slide nr. 4 might be of interest to you..."
- How to sell a toxic pesticide the smart way–call it organic
- Leftist dystopia? Anti-technology fever animates opposition to GMOs and other ‘disruptive’ technologies
- CDC faced a nearly impossible balancing act with Ebola, and failed
- Why Chobani reversed course, making yoghurt only from milk from cows not fed GMO grain
- Monterey, California, hotbed of anti-GMO activism, home to new GMO corn farm
- Evolution is sometimes messy or even outright ridiculous