Cassini spies mysterious object named ’Peggy’ at edge of Saturn’s rings
2013-12-12 0:00

By Adam Mann | Wired



Nasa’s Cassini spacecraft has spotted an object located right at the edge of Saturn’s A ring that is confounding scientists. Its name? Peggy.

This strange something was spotted by accident on 15 April when Cassini’s cameras were aimed at a tiny moon named Prometheus that orbits just inside another of Saturn’s rings. A member of the mission’s imaging team, astronomer Carl Murray of Queen Mary University of London, noticed an odd kink at the A ring’s edge that jutted outward.

"I’d not seen anything like this personally in the A ring," he said during a talk today here at the 2013 American Geophysical Union conference.

Because he was analysing the images on 19 April, the same day as his mother-in-law’s 80th birthday, Murray named the mystery object after her. Peggy (the object) appears to be about 1 kilometer in diameter, much too small to be a moon or even moonlet, which are generally at least 10 times bigger. Cassini’s cameras can only see down to about 10 km, so Peggy is only known by the interference it causes.

"What he sees is a disturbance in the rings," said physicist Matthew Headman from the University of Idaho, also a member of Cassini’s imaging team but who was not involved in Murray’s work.

Nobody knows exactly what Peggy is.

[...]

Read the full article at: wired.co.uk




Related Articles


Latest News from our Front Page

Pro-Israel bias: BBC admits editorial breach in interview with Israeli defense chief
2015-05-23 7:58
The BBC has reached a “provisional finding” to uphold complaints made by Palestinian activists that the broadcaster breached its editorial guidelines in a “soft” interview with the Israeli defense minister. Complaints focused on BBC journalist Sarah Montague’s alleged failure to challenge controversial claims made by Israeli Defense Minister Moshe Ya’alon. Journalist Amena Saleem, who works with the Palestine Solidarity Campaign (PSC), wrote ...
41% of Americans Support Criminalizing "Hate Speech"
2015-05-23 7:31
The following are from a recent poll about what some are calling on for "hate speech" 1. Support for Hate Crimes Legislation Do you support or oppose the federal law that requires increased penalties for hate crimes committed on the basis of the actual or perceived race, color, religion, national origin, ethnicity, or gender of any person? 2. Support for Expanding Hate Crimes Do ...
FBI Admits No Major Cases Cracked with Patriot Act Snooping Powers
2015-05-23 7:36
FBI agents can’t point to any major terrorism cases they’ve cracked thanks to the key snooping powers in the Patriot Act, the Justice Department’s inspector general said in a report Thursday that could complicate efforts to keep key parts of the law operating. Inspector General Michael E. Horowitz said that between 2004 and 2009, the FBI tripled its use of bulk ...
Sweetener Stevia Was Once Hailed As An Anti-Fertility Agent for Population Reduction
2015-05-23 7:13
Maybe it's not so sweet now... If you've thought stevia, the natural alternative to sugar and artificial sweetners with aspartame, et al., is too good to be true, there may be a catch. Check out this textbook written in 1970 by Paul and Anne Ehrlich, the precursor to the textbook Ecoscience they wrote with Obama Science Czar John P. Holdren ...
TPP Aproved: Senate Republicans Give Obama New Powers - Details Remain 'Classified'
2015-05-23 6:43
President Obama won a big victory for his trade agenda Friday with the Senate’s approval of fast-track legislation that could make it easier for him to complete a wide-ranging trade deal that would include 11 Pacific Rim nations. A coalition of 48 Senate Republicans and 14 Democrats voted for Trade Promotion Authority late Friday, sending the legislation to a difficult fight ...
More News »