Daily Mail: It has been calculated that asteroid 1999 RQ36, which is more than 500 meters in diameter, has a 1-in-1000 chance of colliding with Earth by the year 2200, most likely on 24 September 2182. Although the asteroid’s current orbit is known, no one can predict its future path with absolute certainty because of the Yarkovsky effect, which arises when a rotating asteroid absorbs and re-radiates the Sun’s energy, thus altering the asteroid’s orbit. One solution to prevent the asteroid’s potentially devastating collision with Earth: Deflect the asteroid’s trajectory by detonating a nuclear warhead on its surface.
The finding that the Saturnian moon may host layers of icy slush instead of a global ocean could change how planetary scientists think about other icy moons as well.
Modeling the shapes of tree branches, neurons, and blood vessels is a thorny problem, but researchers have just discovered that much of the math has already been done.
January 29, 2026 12:52 PM
Get PT in your inbox
PT The Week in Physics
A collection of PT's content from the previous week delivered every Monday.
One email per week
PT New Issue Alert
Be notified about the new issue with links to highlights and the full TOC.
One email per month
PT Webinars & White Papers
The latest webinars, white papers and other informational resources.