Never seen Neptune? It’s time you should, and this weekend offers a fine time to try, as the faintest planet in the solar system approaches the brightest in the dusk sky, for a splendid conjunction of the pair.Continue reading “A Twilight Tryst: Venus Meets Neptune in the Dusk Sky”
For fans and enthusiasts of space exploration, the name Kevin Gill ought to be a familiar one. As a software engineer at NASA’s Jet Propulsion Laboratory who specializes in data visualization and analysis, he has a long history of bringing space exploration to life through imagery. Among his most recent offerings is a very interesting pic taken by the Curiosity rover early in its mission.Continue reading “Curiosity Looked up and Saw Phobos During the Daytime”
At Launch Complex 39A at the Kennedy Space Center in Cape Canaveral, Florida, during the morning hours this past Sunday (Jan, 19th), SpaceX conducted the final uncrewed test of their Crew Dragon space capsule. This was the all-important in-flight abort test, the purpose of which was to validate the crew capsule’s escape capabilities in the event of an unexpected emergency during launch.
The event, which was live-streamed by NASA TV, was a complete success and saw the Crew Dragon successfully separate from its Falcon 9 launcher before being retrieved at sea. With this test complete, NASA and SpaceX will be moving forward with the first crewed mission. Known as Crew Demo-2, this mission will see two astronauts launched aboard the Crew Dragon to the International Space Station (ISS) later this year.Continue reading “SpaceX Crew Dragon Capsule Nails In-Flight Abort Test! Next Stop, the ISS!”
At the center of our galaxy lies a region where roughly 10 million stars are packed into just 1 parsec (3.25 light-years) of space. At the center of this lies the supermassive black hole (SMBH) known as Sagittarius A*, which has a mass of over 4 million Suns. For decades, astronomers have been trying to get a better look at this region in the hopes of understanding the incredible forces at work and how they have affected the evolution of our galaxy.
What they’ve found includes a series of stars that orbit very closely to Sagittarius A* (like S1 and S2), which have been used to test Einstein’s Theory of General Relativity. And recently, a team from UCLA’s Galactic Center Orbits Initiative detected a series of compact objects that also orbit the SMBH. These objects look like clouds of gas but behave like stars, depending on how close they are in their orbits to Sagittarius A*.Continue reading “More Mysterious Space Blobs Have Been Found Near the Center of the Milky Way”
As part of their Commercial Crew Development (CCDev) Program, NASA has contracted with aerospace giants like SpaceX and Boeing to provide commercial launch services to the International Space Station (ISS). These services will consist of SpaceX’s Crew Dragon (Dragon 2) and Boeing’s CST-100 Starliner bringing astronauts to orbit in the coming years, effectively restoring domestic launch capability to the US.
To get these spacecraft ready for flight, Boeing and SpaceX have been putting them through rigorous launch tests. Tomorrow morning (Saturday, Jan. 17th), SpaceX will be conducting its final test in preparation for crewed flights. This is the all-important in-flight abort test, which will be live-streamed by NASA TV – will take place at 7:45 AM EST (4:45 AM PST) from Launch Complex 39A in Florida.Continue reading “Crew Dragon Abort Test is Scheduled for Saturday Morning”
The European Space Agency is looking to recruit amateur astronomers to help characterize possible secondary targets for the upcoming Hera asteroid rendezvous mission.Continue reading “ESA Recruits Amateur Astronomers Ahead of Hera Asteroid Mission”
For decades, scientists have been trying to figure out the minimum number of satellites that would be able to see every point on Earth. This question is motivated in part by the growing problem of space debris, but also by considerations of cost and efficiency. By the mid-1980s, researcher John E. Draim proposed a solution to this problem in a series of studies, claiming that a four-satellite constellation was all that was needed.
Unfortunately, his solution simply wasn’t practical at the time since a tremendous amount of propellant would be needed to keep the satellites in orbit. But thanks to a recent collaborative study, a team of researchers has found the right combination of factors to make a four-satellite constellation possible. Their findings could drive advances in telecommunication, navigation, and remote sensing while also reducing costs.Continue reading “Scientists Figure Out How to Continuously Watch the Entire Planet With Just 4 Satellites”
In 1967, NASA scientists noticed something they had never seen before coming from deep space. In what has come to be known as the “Vela Incident“, multiple satellites registered a Gamma-Ray Burst (GRB) that was so bright, it briefly outshined the entire galaxy. Given their awesome power and the short-lived nature, astronomers have been eager to determine how and why these bursts take place.
Decades of observation have led to the conclusion that these explosions occur when a massive star goes supernova, but astronomers were still unsure why it happened in some cases and not others. Thanks to new research by a team from the University of Warwick, it appears that the key to producing GRBs lies with binary star systems – i.e. a star needs a companion in order to produce the brightest explosion in the Universe.Continue reading “It Takes Two Stars to Make a Gamma Ray Burst”
In 2012, the balloon-borne observatory known as the Super Trans-Iron Galactic Element Recorder (SuperTIGER) took to the skies to conduct high-altitude observations of Galactic Cosmic Rays (GCRs). Carrying on in the tradition of its predecessor (TIGER), SuperTiger set a new record after completing a 55-day flight over Antarctica – which happened between December of 2012 and January of 2013.
On December 16th, 2019, after multiple launch attempts, the observatory took to the air again and passed over Antarctica twice in the space of just three and a half weeks. Like its predecessor, SuperTIGER is a collaborative effort designed to study cosmic rays – high-energy protons and atomic nuclei – that originate outside of our Solar System and travel through space at close to the speed of light.Continue reading “Balloon-Based Cosmic Ray Observatory is Now on its Second Trip Around Antarctica”
The Omega Nebula (Messier 17), also known as the Swan Nebula because of its distinct appearance, is one of the most well-known nebulas in our galaxy. Located about 5,500 light-years from Earth in the constellation Sagittarius, this nebula is also one of the brightest and most massive star-forming regions in the Milky Way. Unfortunately, nebulas are very difficult to study because of the way their clouds of dust and gas obscure their interiors.
For this reason, astronomers are forced to examine nebulas in the non-visible wavelength to get a better idea of their makeup. Using the Stratospheric Observatory for Infrared Astronomy (SOFIA), a team of NASA scientists recently observed the Swan Nebula in the infrared wavelength. What they found has revealed a great deal about how this nebula and stellar nursery evolved over time.Continue reading “New View of the Swan Nebula From NASA’s Airborne SOFIA Telescope”