In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.

The first new asteroid identified this year didn't last long. Asteroid 2014 AA was spotted by a telescope early New Year's morning, and fizzled up over the Atlantic Ocean a day later. 
  
 2014 AA is only the second incoming object astronomers have tracked before it hit the Earth – and they almost missed it. The first such object, 2008 TC3 , was discovered on 6 October 2008 about 20 hours before it became a fireball over Sudan. 
  
 Word of 2008 TC3's approach spread quickly, allowing observers to track it and predict when and where it would hit the atmosphere to within about a second and a kilometre, says Bill Gray, an amateur astronomer in Maine who calculates asteroid orbits. Thanks to that precision, a team from the University of Khartoum, Sudan, was able to recover fragments that reached the ground. 
  
 Astronomers were not so lucky with 2014 AA. Like 2008 TC3, the new asteroid was discovered with an automated telescope in the Catalina Mountains north of Tucson by the University of Arizona's Mount Lemmon Survey. The survey automatically tracks moving objects and calculates preliminary orbits, and then posts the data to a network of astronomers for follow-up observations. 
  
 Holiday arrival 
  
 But 2014 AA's holiday-period arrival meant it nearly slipped by unnoticed. With only 90 minutes of automatic observations recorded, Gray calculated the object's orbit in the evening of 1 January and realised it was on a collision course with Earth. He had insufficient data to pinpoint the time and place of impact, but preliminary analysis of infrasound observations has since narrowed it down to around 0200 GMT in the mid-Atlantic, says Steve Chesley of NASA's Jet Propulsion Laboratory in Pasadena, California. 
  
 The asteroid was 2 to 4 metres wide, which makes it a little smaller than 2008 TC3 and much smaller than the 17-metre-wide meteor that exploded over Chelyabinsk, Russia, in February 2013. 
  
 Objects of 2014 AA's size hit Earth every few months, and are too small to pose a threat to the planet. But tracking their motions through the atmosphere could help astronomers recover the pieces that survive, says Peter Jenniskens of the SETI Institute in Mountain View, California, who led the effort to collect meteorites from 2008 TC3 and the Chelyabinsk meteor. 
  
 Although 2014 AA is probably lost to the sea, learning to track others like it could have big payoffs for science. "It's like a low-cost sample-return mission," he says. 
  
 If you would like to reuse any content from New Scientist, either in print or online, please contact the syndication department first for permission. New Scientist does not own rights to photos, but there are a variety of licensing options available for use of articles and graphics we own the copyright to. ||||| For the second time ever, an astronomer saw an asteroid headed for Earth before it got here. 
  
 And for the second time, the discoverer was Tucson astronomer Rich Kowalski, using the 60-inch telescope on Mount Lemmon. ﻿ 
  
 The asteroid named 2014 AA was about the size of a car, and it likely burned up in the atmosphere over the Atlantic Ocean off the West Coast of Africa on New Year’s Day. ﻿ 
  
 In comparison, the one that lit up Tucson skies last month was about the size of a basketball. 
  
 Kowalski works at the Catalina Sky Survey, a division of the University of Arizona’s Lunar and Planetary Laboratory. ﻿ 
  
 �?This is a group that has found more than half the near-Earth asteroids known to mankind at the moment,�? said Professor Timothy Swindle, who heads the laboratory. ﻿ 
  
 The Catalina Sky Survey has dedicated telescope time, two good telescopes and software that helps detect objects in real time, he said. 
  
 �?These two they’ve found are little ones, but their real job is to find ones that may be dangerous,�? Swindle said. �?The trick is to find them before they find us, which is what they’re trying to do.�? 
  
 Kowalski was working alone on a routine night on New Year’s Eve when he spotted asteroid 2014 AA, said Sky Survey director Eric Christensen. ﻿ 
  
 Right away he reported his observations to the Minor Planet Center — a clearinghouse for information about the locations of minor planets, comets, asteroids and other space objects — and then he made follow-up observations. 
  
 The impact trajectory was later calculated by three other groups of scientists, Christensen said. 
  
 �?It’s yet another reminder that near-Earth space is a busy place,�? he said. 
  
 Kowalski previously spotted asteroid 2008 TC3, which broke up in the skies of Sudan in 2008. Many pieces of the rock, known as the Almahata Sitta meteorite, have since been found. ﻿ 
  
 Kowalski wasn’t immediately available for comment Thursday. He had the day off. 
  
 Small asteroids impact Earth frequently, Christensen said, but the main mission is to find larger objects that would have terrible consequences well before they get close to Earth. 
  
 He said finds like 2014 AA are �?kind of a bonus.�? |||||
While working a solo shift on New Year's Eve, an Arizona astronomer spotted a car-sized asteroid en route to Earth. There are a few amazing things about this: 1) It's only the second time ever that an asteroid has been spotted before impact, and 2) The previous one was spotted by the same guy. Astronomer Rich Kowalski is part of the Catalina Sky Survey at the University of Arizona, a group "that has found more than half the near-Earth asteroids known to mankind," the head of the lab tells the Arizona Daily Star. The asteroid, called 2014 AA, almost definitely broke apart in the atmosphere about a day later, reports New Scientist, its pieces falling harmlessly into the Atlantic Ocean off the coast of Africa. Kowalski's prior spotting, the similarly-sized 2008 TC3, had a similarly harmless impact over Sudan, where pieces of it have since been found. There's a reason these rocks aren't spotted often—this one was 150,000 times less bright than the faintest star you can see with your naked eye, according to Phil Plait at Slate. But it also points to how important it is to look, lest the next rock be more threatening. "It's yet another reminder that near-Earth space is a busy place," the Sky Survey's director said. (To wit, there's a small chance a big asteroid could hit in 2032.)