中新网客户端北京7月19日电 当地时间7月18日，洛杉矶奥运会组委会宣布，2028年洛杉矶夏季奥运会将于7月14日开幕，7月30日闭幕。洛杉矶夏季残奥会的比赛时间为8月15日至27日。这将是洛杉矶历史上第三次举办奥运会、首次举办残奥会，官方预计届时将会有超过15000名运动员参赛。 Russia's Luna-25 probe likely left a 33-foot-wide crater on the surface of the moon last month when it lost control and crashed down, NASA said Thursday, revealing images that show the suspected impact site.Russia's first moon mission in 47 years ended in failure on August 19 when the Luna-25 probe smashed into the moon after a thruster firing went awry, cutting off communications and putting the spacecraft on the wrong orbital path, according to Roscosmos, the Russian space agency.NASA's Lunar Reconnaissance Orbiter (LRO) spacecraft captured images last week of what the U.S. space agency described as a "new crater" after Roscosmos published an estimate of where the probe had struck.During the descent to the surface on August 19, the Russian spacecraft Luna-25 experienced an anomaly that caused it to smash into the moon's surface. The faiint arrow in this NASA image shows where the agency believes the probe made impact. NASA's Goddard Space Flight Center/Arizona State University "Since this new crater is close to the Luna-25 estimated impact point," NASA wrote in a statement, "the LRO team concludes it is likely to be from that mission, rather than a natural impactor." Moscow has set up a commission to investigate exactly why Luna-25 crashed.The failure was a major disappointment for the Russian space program, which was attempting to up its game amid renewed interest in the moon's southern polar region, where ice deposits may exist in permanently shadowed craters. Ice could offer future space missions a way to produce breathable air, water and even hydrogen rocket fuel.
The Russians have had little success with independent space exploration since the Luna-24 robot landed on the moon in 1976. It scooped up about six ounces of lunar soil and returned it to Earth in Russia's third successful robotic lunar sample return mission.Twelve NASA astronauts walked on the moon a half century ago in the agency's Apollo program, but no Russian cosmonauts ever made the trip. Russia's only previous post-Soviet deep space robotic missions, both targeting Mars, ended in failure.
Former NASA astronaut breaks down India's moon landing04:34Luna-25 was an attempt to pick up the torch and put Russia back into a new space race of sorts, as the U.S., China, India, Japan and the private sector all plan multiple moon missions that could lay the foundations for lunar bases and eventual flights to Mars.India's Chandrayaan-3 Vikram lunar lander made a historic touch-down near the moon's south pole just several days after the Russian probe crashed. It delivered a lunar rover that has already sent back data from soil samples.
