Word: orbiters
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...Arecibo, Puerto Rico, the researchers detected rhythmic radio signals from the constellation Aquila. The bursts were coming from a pulsar, or rapidly rotating neutron star-the incredibly compressed cadaver of a giant star whose nuclear fires have died out. Some 15,000 light-years away, it apparently was in orbit around a second compact object, perhaps another neutron star or even a black hole, whose gravity is so strong that nothing, not even light, can escape its grasp...
...flawless launch, NASA lofted into earth orbit an $87 million remote-controlled astronomical observatory that should help answer some of the most fundamental questions about the universe. Two days later, some 29 million kilometers (18 million miles) further out in space and closing in on Venus, a U.S. spacecraft ejected the first of four probes that will thoroughly analyze the atmosphere of the cloud-shrouded planet before hitting its scalding surface...
...vehicle: the unmanned Pioneer Venus 1 spacecraft. Though launched almost three months before Pioneer 2, it has followed a more sweeping trajectory around the sun and will just barely nose out its sister ship, arriving at Venus on Dec. 4. Its assignment is different too; it will ease into orbit around Venus, and in addition to scanning the atmosphere below with an array of instruments, it will beam powerful radar signals through the Venusian clouds and bounce them off the surface. Pioneer 1 will then radio the radar data back to earth, where scientists hope to produce a topographic...
...High Energy Astrophysical Observatory-2 (HEAO-2), which was boosted last week into a letter-perfect 330-mile high orbit. Saturday sent back to waiting astronomers its first detailed x-ray photograph...
...yesterday, an Atlas-Centaur rocket blasted off from Cape Canaveral and sent HEAO-2 into an orbit that mission scientists called "perfect ... right on the money...