What is a graviton?
What is a graviton? Where can it be found?
According to Weisstein's world of Physics, a graviton is "a theoretical particle having no mass and no charge that carries the gravitational force."
In quantum mechanics, we know that light comes to us in massless packets, or particles, called photons, which carries electromagnetic force with it. Because this worked so well and is essential to the theory of quantum mechanics, people hypothesized the existence of a similar particle which carries the gravitational force.
As of today (June 4, 2003) we have not found proof that the graviton exists. Because these particles carry very little energy, they are very hard to detect - but we're still looking!
Get More 'Curious?' with Our New PODCAST:
- Podcast? Subscribe? Tell me about the Ask an Astronomer Podcast
- Subscribe to our Podcast | Listen to our current Episode
- Cool! But I can't now. Send me a quick reminder now for later.
- How do gravitons escape black holes to tell the universe about their gravity?
- What is the speed of gravity?
How to ask a question:
If you have a follow-up question concerning the above subject, submit it here. If you have a question about another area of astronomy, find the topic you're interested in from the archive on our site menu, or go here for help.Table 'curious.Referrers' doesn't existTable 'curious.Referrers' doesn't exist
This page has been accessed 46697 times since June 4, 2003.
Last modified: June 4, 2003 2:41:16 PM
Ask an Astronomer is hosted by the Astronomy Department at Cornell University and is produced with PHP and MySQL.
Warning: Your browser is misbehaving! This page might look ugly. (Details)