Spacewalkers Mark Lee (right) and Carl Meade work above Discovery’s payload bay during STS-64, 25 years ago, this month. Below them is the large telescope of their primary payload, the Lidar In-Space Technology Experiment (LITE) and, just behind it, the gold-colored mass of the SPARTAN solar physics satellite. Photo Credit: NASA
A quarter-century ago, this month, the crew of Discovery trialed virtually all of the Space Shuttle’s myriad capabilities: science and technology, satellite deployment, rendezvous and retrieval and—arguably most dramatic of all—spacewalking. As detailed in last weekend’s AmericaSpace history feature, STS-64 in September 1994 was notable in that it featured the first evaluation of the Simplified Aid for EVA Rescue (SAFER), a self-rescue tool which would permit spacewalkers to recover from becoming detached from their tether during an Extravehicular Activity (EVA). True to its name, SAFER would indeed offer a “safer” means of going about spacewalking and after astronauts Mark Lee and Carl Meade first tested it on STS-64 it has since entered operational service and its descendants are today used during EVAs aboard the International Space Station (ISS).
Twenty-five years ago, this month, STS-64 astronauts Mark Lee (pictured here) and Carl Meade performed the first untethered spacewalk with the Simplified Aid for EVA Rescue (SAFER). Photo Credit: NASA
On 123 occasions between March 1965 and September 1994, astronauts and cosmonauts had clambered outside their spacecraft and maneuvered themselves around in the harsh and unforgiving vacuum of space. They had used handhelds, tethers and specialized backpacks to prevent them from losing physical contact with their vehicles and inadvertently floating away into the void. But when STS-64 astronauts Mark Lee and Carl Meade ventured outside shuttle Discovery’s airlock on the morning of 16 September 1994—a quarter-century ago, this month—they wore something quite different and wholly new on their space suits. Known as the Simplified Aid for EVA Rescue (SAFER), it provided a self-rescue tool for its wearer and its descendants are today routinely used by spacewalkers aboard the International Space Station (ISS).
Pioneer 11 became the first robotic visitor to Saturn, passing the ringed world in September 1979. Photo Credit: NASA
Spectacular Saturn—the Solar System’s second-largest planet—has been known to humanity for millennia, although only in the last few centuries since the invention of the telescope has its nature and its glorious system of rings entered popular consciousness and become better understood. Today, of course, following the visitations of the Voyager probes and more recently the multi-year tour by the joint U.S./European Cassini mission, we know more about Saturn than ever before. Yet 40 years ago today, on 1 September 1979, human eyes glimpsed the planetary “Bringer of Old Age” close-up and in mesmerizing detail for the first time, all thanks to a spacecraft which was intended as a backup to another.
View od the fully assembled James Webb Space Telescope. The sunshield and unitized pallet structures (UPSs) that fold up around the telescope for launch, are partially deployed to enable telescope installation. Photo Credit: NASA/Chris Gunn
NASA’s James Webb Space Telescope (JWST) just took another big step towards completion, as the two halves it was currently in were connected together for the first time at Northrop Grumman’s facilities in Redondo Beach, California.
The CHIME radio telescope in south-western British Columbia, Canada. CHIME has detected eight new repeating Fast Radio Bursts. Photo Credit: CHIME
Fast Radio Bursts (FRBs) are one of the most mysterious phenomena in astronomy. They are extremely brief radio signals coming from deep space, beyond our galaxy, and so far, scientists still don’t know what is causing them.M ost of the FRBs have been one-off bursts, and only two to date had been seen to repeat, making them even odder.
But now, scientists have detected eight more repeating FRBs. They were found using the Canadian Hydrogen Intensity Mapping Experiment (CHIME) telescope in south-western British Columbia. The CHIME telescope is located at the Dominion Radio Astrophysical Observatory (DRAO), a national facility for astronomy operated by the National Research Council of Canada.
CRS-18 departs the International Space Station (ISS) early Tuesday morning. Photo Credit: NASA
More than a month since its arrival, SpaceX’s CRS-18 Dragon cargo ship departed the International Space Station (ISS) and returned to Earth earlier today (Tuesday), bringing around 2,700 pounds (1,225 kg) of experiments and payloads back home and into the hands of eager research teams. The Dragon was released by the station’s 57.7-foot-long (17.6-meter) Canadarm2 robotic arm at 10:59 a.m. EDT, whilst flying 256 miles (412 km) over the Pacific Ocean. At the controls of Canadarm2 was Robotics Officer (ROBO) David Gruntz in the Mission Control Center (MCC) at the Johnson Space Center (JSC) in Houston, Texas, whilst Expedition 60 astronaut Christina Koch provided monitoring of Dragon’s departure from her perch in the space station’s multi-windowed cupola. A few hours later, Dragon performed an on-time de-orbit maneuver and splashed down in the Pacific Ocean at 1:21 p.m. PDT (4:21 p.m. EDT), some 300 miles (480 km) southwest of Long Beach, Calif.
Neptune, as seen by Voyager 2 in 1989. No other missions have yet returned to this enigmatic world. Photo Credit: NASA/JPL
READ Part 1, Part 2 and Part 3 of AmericaSpace’s Neptune 30th anniversary commemorative feature.
Thirty years ago today, NASA’s Voyager 2 spacecraft swept silently over the royal-blue clouds of Neptune at the ragged edge of our Solar System and revealed a world unlike any other: a world of wild weather, a reservoir of energy and a place quite unlike its near-twin, Uranus. As outlined in yesterday’s AmericaSpace history feature, the tiny spacecraft’s observations of Neptune turned up many more questions than answers; as would its close passage by one of the Solar System’s strangest moons, Triton.
The Great Dark Spot and Bright Companion, together with the chevron-like “Scooter” are visible in this Voyager 2 image of Neptune. Photo Credit: NASA
READ Part 1 and Part 2 of AmericaSpace’s Neptune 30th anniversary commemorative feature.
Thirty years ago this weekend, NASA’s Voyager 2 spacecraft swept silently above Neptune’s royal-blue cloud-tops and revealed a world on the ragged edge of the Solar System which yielded more questions than answers and more mysteries than solutions. Coming 42 months after it passed Neptune’s near-twin, Uranus, it was expected that the two giant planets—so akin to one another in size and chemical composition—would share many similarities. Yet whilst Uranus proved to be a quiet world, with a misleadingly calm atmosphere, it became abundantly clear in the months prior to Voyager 2’s visit that Neptune was quite the opposite. Its dynamic atmosphere sprang into the worldwide headlines in early 1989, when NASA revealed the discovery of large cloud structures. These far-off observations corroborated similar Earth-based studies, but more was to come as the tiny spacecraft drew closer.
Artist’s concept of Europa Clipper during a flyby of Europa. Image Credit: NASA/JPL-Caltech
NASA’s next mission back to Jupiter’s moon Europa just took another big step towards reality. The next phase of Europa Clipper has been confirmed, giving the go-ahead for the mission to proceed to final design, construction and testing.
Artemis 1 Core Stage. Photo: Jim Hillhouse / AmericaSpace.com
NASA’s Administrator Jim Bridenstine is passionate, very passionate, about getting people exploring space again. That comes through clearly when he speaks, whether about Artemis’ goal of landing on the Moon by 2024 or the Orion and Space Launch System (SLS) programs that will blaze a trail to that goal. He is also honest about the pluses and minuses of the capabilities of those programs that make up Artemis. And Jim Bridenstine is, as a former congressman, open about the politics that have made Artemis possible today.
