Detailed Instructions: In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
Problem:Beginning the next generation of gravitational wave detectors is the Europe-led eLISA project. To test key technologies of the super-sized space-based mission, LISA Pathfinder was launched last year (pictured here in the cleanroom before launch). It is hoped eLISA will launch by the mid 2030s. Physicists are keen to have many different observatories sensitive to different frequencies as many different gravitational wave-generating phenomena may then be discovered. VIDEO: Gravitational Waves Confirmed: A Historic Discovery 
  
 LIGO may have been the first to finally detect gravitational waves, but other detectors exist (and are being built) around the globe and international physicists have been reinvigorated by the Sept. 14, 2015 discovery. Shown here, physicist Holger Wittel sits in a control center next to a cardboard cutout of Albert Einstein at the GEO600 gravitational wave detector in Ruthe near Hanover, Germany, after the Feb. 11 US announcement. GEO600 is joined by other gravitational wave projects, including the Italian-French Virgo detector located near Pisa, Italy. Japan, India and China also have plans for their own gravitational wave observatories. When it comes to gravitational waves, the more detectors the better -- at least 2 detectors are needed to confirm a detection and more detectors as part of a global network will be able to pinpoint the origin of cosmic phenomena generating gravitational waves. MORE: We May Not Live in a Hologram After All 
  
 Last week, scientists from the international LIGO Collaboration met with legislators of the House Science Committee in Washington, D.C. to discuss the discovery. Pictured (from left to right): Assistant Director of the NSF's Directorate of Mathematical and Physical Sciences Fleming Crim, LIGO Lab Director David Reitze, LSC Spokesperson Gabriela Gonzalez and LIGO MIT Director David Shoemaker at the hearing on Feb. 24. MORE: Gravitational Waves: Spying the Universe's 'Dark Side' 
  
 Graphics of the gravitational waves measured by two LIGO detectors in Washington and Louisiana are shown as members of the news media and guests listen to remarks on the discovery of gravitational waves, during the press conference in Washington, D.C., Feb. 11, 2016. ANALYSIS: We Just Heard the Spacetime ‘Chirp’ of Black Hole Rebirth 
  
 Theoretical physicist Kip Thorne, of Caltech (right) watches the discovery announcement with Weiss on Feb. 11. Thorne is co-founder of LIGO that commenced construction in 1994 and went online in 2002, using Weiss' interferometer to seek out gravitational waves. ANALYSIS: Gravitational Waves vs. Gravity Waves: Know the Difference! 
  
 The interferometer system that was key to the gravitational wave detection, forming the basis of LIGO was invented by Rainer Weiss, professor of physics emeritus at the Massachusetts Institute of Technology (MIT). At the Washington, D.C. announcement on Feb. 11, Weiss explained how the LIGO interferometers detected the tiny ripples in spacetime, using a plastic mesh to represent the "fabric" of spacetime. As gravitational waves propagate, they warp spacetime, as the physicist demonstrated by stretching the mesh. GUIDE: What You Need to Know About Gravitational Waves 
  
 Executive Director of the LIGO Laboratory at Caltech David Reitze is seen here discussing the details behind the gravitational wave discovery during the National Science Foundation's press conference in Washington, D.C. on Feb. 11, 2016. MORE: Gravitational Waves Detected for First Time 
  
 100 years after Einstein developed his theories around the nature of spacetime, the international LIGO Science Collaboration restarted their search for gravitational waves after upgrading the twin LIGO stations located in Washington and Louisiana in September 2015. Almost immediately after the reboot, after searching since 2002, a signal was seen. Einstein's theories were (once again) confirmed, but the signal was much more -- for the first time we'd detected gravitational waves direct from a black hole collision. Shown here an aerial photograph of the LIGO Livingston Observatory in Louisiana. MORE: We've Detected Gravitational Waves, So What? 
  
 Forming the basis of the historic gravitational wave detection is Albert Einstein's theories he presented at the Prussian Academy of Sciences in November 1915. In this photograph, the Head of Einstein Archives Roni Gross of the Hebrew University, Jerusalem, Israel, presents the original documents penned by Einstein outlining the theoretical basis for gravitational waves in his landmark theory: General Relativity. MORE: 100 Years of General Relativity: Thought and Action 
  
 February 11, 2016 will go down in history as the date humanity probed so deep into the fabric of spacetime that we finally gained the ability to detect gravitational waves. These extremely slight ripples were predicted by Einstein's theory of general relativity a century ago and have been sought after for decades, but in September 2015, after a significant sensitivity upgrade, the Laser Interferometer Gravitational-wave Observatory (LIGO) was finally able to detect the oscillations from a black hole merger some 1.3 billion light-years distant. MORE: Gravitational Waves: Spying the Universe's 'Dark Side' As February comes to an end, let's take a look back at this incredible month with a collection of photos from in and around the physics festivities. Photo: A visualization of gravitational waves pictured during a press conference by the Max Planck Institute for Gravitational Physics (Albert Einstein Institute) at the Leibniz University in Hanover, Germany, Feb. 11, 2016. 
  
 Shown is an artist’s rendering of the “Hitomi” satellite. 
  
 Dozens of space scientists are desperately scouring the skies after losing track of a quarter-of-a-billion-dollar Japanese satellite that was sent to study black holes. 
  
 Play Video Gravitational Waves Confirmed: A Historic Discovery Scientists have detected gravitational waves for the first time -- ripples in spacetime that back up Einstein's work and let us eavesdrop on cosmological chaos. DCI 
  
 The ultra-high-tech “Hitomi” — or eye — satellite was supposed to be busy communicating from orbit by now, the Japan Aerospace Exploration Agency (JAXA) said, but no one can say exactly where it is. 
  
 The device briefly made contact with ground crews but has since disappeared, with American researchers reporting that it could have broken into several pieces. 
  
 “We’re taking the situation seriously,” Saku Tsuneta, director of the agency’s Institute of Space and Astronautical Science, told a news conference on Sunday. 
  
 JAXA has around 40 technicians on the case, trying to locate the spacecraft and establish some kind of communication with it, an agency spokesman told AFP on Monday. 
  
 “We know approximately where it is,” the spokesman added, but scientists were still trying to work out its precise location. 
  
 The satellite, developed in collaboration with NASA, the US space agency, and various other groups, was launched on February 17 and was designed to observe X-rays emanating from black holes and galaxy clusters. 
  
 Black holes have never been directly observed, but scientists believe they are huge collapsed stars whose enormous gravitational pull is so strong that nothing can escape. 
  
 The announcement last month that gravitational waves had been detected for the first time added to evidence of their existence after scientists found the waves had been caused by two enormous black holes colliding. 
  
 The lost satellite, which cost 31 billion yen ($273 million), including the cost of launching it, was supposed to orbit at an altitude of about 580 kilometers (360 miles). 
  
 The Japanese rocket carrying the satellite was launched by the country’s mainstay H-IIA rocket from the Tanegashima Space Center in southern Japan. 
  
 Japan has a massive space program and the country has achieved successes in both scientific and commercial satellite launches. It has sent astronauts on space shuttle and International Space Station missions. ||||| The Japan Aerospace Exploration Agency (JAXA) lost contact with its flagship X-ray astronomical satellite, Hitomi, on 26 March. The observatory, launched on 17 February, had been going through initial check-outs and calibrations. 
  
 Hitomi's status remains unknown as JAXA engineers work to re-establish communication. Ominously, the US Joint Space Operations Center, which tracks space debris, reported spotting five objects in the vicinity of the spacecraft around the time that it went silent. The centre characterized the objects as pieces of a “break-up”. 
  
 The space debris could consist of minor pieces that were blown off Hitomi, as opposed to indicating complete destruction, says Jonathan McDowell, an astronomer and space analyst at the Harvard–Smithsonian Center for Astrophysics in Cambridge, Massachusetts. 
  
 Hitomi, which was known before launch as ASTRO-H, is designed to study X-rays streaming from cosmic phenomena such as black holes, galaxy clusters and dark matter. It carries a high-resolution spectrometer to measure X-ray wavelengths in exquisite detail. Earlier versions of the same instrument have twice met a grim fate on JAXA missions: in 2000, the ASTRO-E telescope crashed on launch, and in 2005, a helium leak aboard the Suzaku satellite crippled its spectrometer within weeks of launch. 
  
 Hope for recovery 
  
 JAXA lost contact with Hitomi at 4:40 p.m. Japan time on 26 March. “The cause of the communication failure is under investigation,” the agency said. It has, however, received at least one short signal from the satellite since then, and is working on possible ways to start talking to it again. 
  
 Agency engineers have pulled off spaceflight recoveries before. In December, JAXA placed the Akatsuki spacecraft into Venus orbit, five years after a failed engine burn seemed to doom the mission. And in 1993, a US X-ray mission named Alexis made it into orbit, but was not heard from for three months. Spacecraft engineers eventually recovered it, and it went on to do its planned X-ray science. 
  
 International partners on the Hitomi project include NASA, the European Space Agency, the Netherlands Institute for Space Research and the Canadian Space Agency. |||||
Solution:
Japan has sort of lost something—a $273M satellite just launched to monitor X-rays coming from galaxy clusters and black holes, Discovery News reports. "We're taking the situation seriously," says Saku Tsuneta, a senior official at the Japan Aerospace Exploration Agency (JAXA). "We know approximately where it is." Launched Feb. 17, the Hitomi satellite was scheduled to be online March 26, but the connection didn't happen. The US Joint Space Operations Center then found signals from five objects close to the satellite, and tracking data shows Hitomi went significantly off course, Wired reports. Did Hitomi break up? Was it hit by an asteroid? Luckily, the Japanese "tend to be very good at resurrecting things that would otherwise be dead," says US space expert Moriba Jah. Case in point: Not long ago, JAXA steered the Akatsuki satellite to orbit around Venus after it went adrift for five years. JAXA could try solving the Hitomi mystery by tracing the paths of those five space objects to see "when the collision actually occurred," says Jah, though Wired calls the idea of an asteroid striking it "on its first day of work" a "crazy coincidence" (maybe Hitomi just blew up). Sadly, the high-resolution spectrometer on board to measure X-rays was ruined on two earlier Japanese missions, damaged on launch in 2000 and crippled by a helium leak in 2005, Nature reports. (The recent discovery of gravitational waves adds to evidence that black holes exist.)