Earth, Mars, Jupiter and Neptune all have traveling companions — space rocks that share the planets' orbits as they circle the sun.

Now scientists have discovered one that tags along with Uranus. About 38 miles (61 kilometers) wide, the icy rock runs ahead of the planet.

Being short on cash may make you a bit slower in the brain, a new study suggests.

People worrying about having enough money to pay their bills tend to lose temporarily the equivalent of 13 IQ points, scientists found when they gave intelligence tests to shoppers at a New Jersey mall and farmers in India.

Rafael Nadal and Roger Federer both dispatched their opponents with ease on Thursday to remain on course for a clash in the quarterfinals of the U.S. Open.

Nadal won the final 12 games of the match to breeze past Brazilian qualifier Rogerio Dutra Silva 6-2, 6-1, 6-0, while Federer was only marginally more troubled in beating Carlos Berlocq 6-3, 6-2, 6-1.

International punitive strikes against Syrian President Bashar Assad's regime without a United Nations mandate will pose a "serious threat" to the security and stability across the Middle East, Caretaker Foreign Minister Adnan Mansour said Thursday.

In an interview with The Associated Press, Mansour warned that a Western military strike would escalate tensions in Lebanon and may dramatically increase the number of Syrian refugees.

Samuel Eto'o has become the second player this week to join Chelsea from Russian club Anzhi Makhachkala.

The Cameroon striker has signed a one-year deal to be reunited with Chelsea manager Jose Mourinho, who he played under at Inter Milan.

When Arsenal and Tottenham meet in the Premier League on Sunday, months of contrasting fortunes in the transfer market will be exposed on the field — and the benches.

When last season ended, the balance of power in north London remained tilted in Arsenal's favor after beating Tottenham to the fourth Champions League spot.

Paris Saint-Germain's slow start in the French league coincides with Zlatan Ibrahimovic's goal drought.

Ibrahimovic was the French league's top scorer when PSG won the championship last season, with a career-high 30 goals, and the whole team was built around him under former coach Carlo Ancelotti.

Germany left back Dennis Aogo has joined Schalke on loan from Bundesliga rival Hamburger SV.

Schalke said in a statement that the 26-year-old Aogo signed a contract through June 2014.

FIFA has imposed global bans on players and referees from Lebanon, Armenia, Estonia and Tunisia implicated in match-fixing cases.

FIFA referee Ali Sabbagh of Lebanon is serving jail time in Singapore after being convicted of agreeing to fix matches in exchange for sexual favors.

Arsenal manager Arsene Wenger announced Lukas Podolski will be out injured for up to 10 weeks, three times longer than first believed.

After the Germany forward injured his left hamstring during Tuesday's Champions League victory over Fenerbahce, Wenger said he would only be out for three weeks.