HOUSTON -- Texans star receiver Andre Johnson said Monday that he will be out for three to four weeks after arthroscopic surgery on his left knee. Da Norris Searcy Jersey . The 30-year-old Johnson sat out Houstons first organized team practice, two weeks after the procedure. "Right now, everything is just focusing on making sure everything is right before I get back out here," Johnson said. "Nothing to panic about." The five-time Pro Bowl selection was inactive for nine regular-season games last year with injuries to both hamstrings. He says he hyperextended the knee against Jacksonville on Nov. 27, his first game back after he missed the previous six. He finished that game and also played the following week against Atlanta before going out with a second hamstring injury. Johnson returned for Houstons playoff opener against Cincinnati, catching five passes for 90 yards and a touchdown. The Texans were eliminated a week later by Baltimore, and Johnson returned home to Miami to resume rehabilitating his hamstring injuries. During that process, Johnson said fluid continued to develop around the knee, and he and the team decided to treat it with surgery. "We thought it had kind of calmed down," Johnson said. "I was back out doing off-season workouts, just running around and stuff, and it just kind of swelled back up. We felt like that was the best thing to do, get the knee scoped, get it fixed." Johnson said the knee injury wont delay his preparations for training camp later this summer. "Right now, Im feeling fine, the swellings gone down a whole lot," he said. Johnson also hurt the same knee in 2007, underwent arthroscopic surgery and missed spring workouts. He returned in time for training camp, then had his most productive season in 2008, making 115 catches for 1,575 yards and eight touchdowns. He played through a badly sprained right ankle for most of 2010, sat out the final two games and had surgery after the season. Johnson is now entering his 10th season, but says hes not worried about his durability. "The past two seasons have been pretty rough for me," Johnson said. "I just dont want to be back in that situation again, where I have to miss seven, eight, nine games. I want to get back to that 1,500-yard Andre. Hopefully, that can happen this year." As the practice began, Johnson and quarterback Matt Schaub tossed short passes to one another on a separate field from the team. Schaub also sat out Mondays workout as he recovers from surgery on his right foot, but coach Gary Kubiak said he was just being overly cautious with him. Jim Otto Raiders Jersey . Toronto selected Holzer in the fourth round, No. 111 overall, in the 2006 NHL entry draft. The 22-year-old native of Munich played 52 games with the DEG Metro Stars of the German Elite League. Ilya Kovalchuk Jersey .J. -- This could be the end for LaDainian Tomlinson. Brian Moorman Jersey . Price started one of the Canadiens 19 playoff games last year when they reached the Eastern Conference finals. Jaroslav Halak started the others but was traded to the St. Louis Blues in June. This season Price started 70 games and on Thursday he turned aside 31 shots. Arthur Moats Jersey . -- A group of teenage hockey players in Vaughan, Ont. T.J. Ward Jersey . Corey Brewer gave them a biggie on the court. Jason Terry gave a bigger one on the sideline. (Agencies) Updated: 2008-04-22 08:58 WASHINGTON -- Astrophysicist Stephen Hawking has been thinking a lot about the cosmic question, Are we alone? The answer is probably not, he says. If there is life elsewhere in the universe, Hawking asks why has humanity not stumbled onto some alien broadcasts in space, maybe something like alien quiz shows? Professor Stephen Hawking gives a lecture entitled Why We Should Go Into Space during the 50 Years of NASA lecture series at George Washington University in Washington, DC. April 21, 2008. Hawking called Monday for a new era of space conquest akin to Christopher Columbus discovery of the new world. [Agencies] Hawkings comments were part of a lecture at George Washington University on Monday in honor of NASAs 50th anniversary. He theorized about possible answers to whether extraterrestrial life exists. One option is that there likely is no life elsewhere. Or maybe there is intelligent life elsewhere, but when it gets smart enough to send signals into space, it also iss smart enough to make destructive nuclear weapons. Ryane Clowe Jersey. . Hawking said he prefers the third option: Primitive life is very common and intelligent life is fairly rare, he then quickly added: Some would say it has yet to occur on earth. So should people worry about aliens? Alien abduction claims come from weirdos and are unlikely. However, because alien life might not have DNA like earthlings, Hawking warned: Watch out if you would meet an alien. You could be infected with a disease with which you have no resistance. The 66-year-old British cosmologist, who suffers from amyotrophic lateral sclerosis, or ALS, and must speak through a mechanical device, believes if the human race is to continue for another million years, we will have to boldly go where no one has gone before. Hawking compared people who do not want to spend money on human space exploration to those who opposed the journey of Christopher Columbus in 1492. The discovery of the New World made a profound difference to the old. Just think, we wouldnt have had a Big Mac or KFC. ' ' '