Free Republic

Let's see how long this thread lasts, the mods pull everything I post that offends or upset the delicate little flat earth and science hating snowflakes that have taken over FreeRepublic these days. Here's a simple method anyone can use to measure the altitude, size, and velocity of the International Space Station by capitalizing on a lunar transit (where ISS is silhouetted against the moon within a narrow corridor - you can find opportunities on transit-finder.com). Anyone can do this with a friend using a good high magnification camera like a P900 or other long focal length telephoto lens on...

NASA's next exoplanet-hunting spacecraft will take to the skies one week from today (April 9), if all goes according to plan. TESS will spot exoplanets via the "transit" method, noting the tiny brightness dips that result when a planet crosses the face of its host star from the spacecraft's perspective. This is the same strategy employed by NASA's famed Kepler space telescope, which has found about two-thirds of the 3,700 known exoplanets to date. But Kepler's finds are mostly faraway worlds at least several hundred light-years from Earth. TESS will aim to find planets close enough to be investigated in...

SpaceX is seeking permission to perform splashdowns of its Dragon spacecraft in the Gulf of Mexico, part of a shift in spacecraft recovery operations from the Pacific Ocean. In a draft environmental assessment prepared by the Federal Aviation Administration, SpaceX proposes to conduct up to six Dragon landings a year in waters off the Gulf coast, between Texas and Florida. The assessment, completed in March, was published in the Federal Register April 5. According to the report, the Gulf of Mexico would serve as a contingency landing site for both cargo and crewed Dragon missions should the primary landing zone...

"Take a virtual tour of the Moon in all-new 4K resolution, thanks to data provided by NASA's Lunar Reconnaissance Orbiter spacecraft. As the visualization moves around the near side, far side, north and south poles, we highlight interesting features, sites, and information gathered on the lunar terrain."

Boeing’s first crewed flight to the International Space Station may last a lot longer than originally planned — and the mission may have an extra crew member along for the ride, too. The company’s Starliner vehicle is supposed to take NASA astronauts to the ISS for the first time later this year on a two-week trip, but the space agency is considering extending the voyage to six months.... This would completely restructure the first crewed trip for Starliner, which was only meant to be a test flight. As part of NASA’s Commercial Crew Program, both Boeing and SpaceX have been...

Webb’s new delay epitomizes the systemic incompetence of Washington. Despite being 13 years behind schedule and costing eight times more than originally planned, NASA and its contractors still couldn’t get things right....

The thrusters aboard the Voyager 1 spacecraft just did what we thought was impossible. After 37 years of inactivity, NASA just received response from spacecraft 13 billion miles away, NASA said in a statement on its website. Voyager 1 is NASA’s farthest and fastest spacecraft. It was launched on September 5, 1977. Having operated for 40 years, 6 months and 14 days as of March 19, 2018, the spacecraft relies on small devices called thrusters to orient itself so it can communicate with Earth. These thrusters fire in tiny pulses, or “puffs,” lasting mere milliseconds, to subtly rotate the spacecraft...

It sure does appear that Russia’s Roscosmos is competing with NASA to see which government agency can delay its missions the longest. In fact, for fun, let’s put together the standings!

"The news yesterday that NASA will once again have to delay the launch of the James Webb Space Telescope due to a variety of technical issues and management errors not only exemplified the fundamental failure of the federal government, it also illustrated the routine failures of today’s mainstream press.The failures of the federal government however is not the focus of this essay.... Instead, the announcement yesterday and the coverage of it by the press provides us a perfect and very obvious signpost for differentiating between the fake news sources that are generally unreliable or too often allow their biases to...

Oh great! This week I’ve got something real to whine about. It appears that the out-of-control-crashing-Chinese-satellite, Tiangong-1, is going to make reentry on Easter and there is nowhere I can go to escape it. The map below shows the relative probabilities of debris landing within a given region. Yellow indicates locations that have a higher probability while green indicates areas of lower probability. Blue areas have zero probability of debris reentry since Tiangong-1 does not fly over these areas (north of 42.7° N latitude or south of 42.7° S latitude). These zero probability areas constitute about a third of the...

The Parker Solar Probe is the size of a small car and named for Prof. Eugene Parker, a 90-year-old American astrophysicist who in 1958 discovered the solar wind. It’s the first time that NASA has named a spacecraft after a living person. The Parker probe... will make a beeline for Venus for the first of seven flybys. Each gravity assist will slow the craft down and reshape its orbit (see below), so it later can pass extremely close to the Sun. The first flyby is slated for late September. ...NASA typically will fly by a planet to increase the spacecraft’s speed...

Citing progress in producing plutonium-238, NASA will allow scientists proposing missions for an upcoming planetary science competition to use nuclear power sources. In a statement issued March 17, Jim Green, director of NASA's planetary science division, said the agency was reversing an earlier decision prohibiting the use of radioisotope power systems for spacecraft proposed for the next mission in the agency's Discovery program. A "long-range planning information" announcement about plans for the competition, issued Dec. 12, said that the use of such power systems would not be allowed, although missions could use radioisotope heater units, which use a very small...

According to statements made by the Academy of Aerospace Propulsion Technology (AAPT) – part of the China Aerospace and Technology Corporation (CASC) and the one’s responsible for developing the hardware – these engines would be capable of delivering 3,500 to 4,000 metric tons (3,858 to 4,409 US tons) of thrust. AAPT also indicated that work on a second-stage and third-stage engine – which would be capable of generating about 200 metric tons (440,000 lbs) and 25 metric tons (55,000 lbs) thrust, respectively – is also in progress. All told, this is roughly six times the thrust that China’s heaviest rocket...

Last month Russia’s space agency, Roscosmos State Corporation, began work on a contingency plan that would reshape its future in space exploration. The country could shift its human spaceflight cooperation from the U.S. to China, sources within Roscosmos told Popular Mechanics. One possible scenario includes Roscosmos exiting the International Space Station program early. If adopted, the new strategy would mark a historic moment for the Russian space program, which has cooperated with the U.S. for nearly three decades. In 1993, not long after the breakup of the USSR.

NASA to decide soon whether flying drone will launch with Mars 2020 rover March 15, 2018 Stephen Clark Artist’s illustration of the Mars helicopter drone that could travel to the red planet as soon as 2020. Credit: NASA/JPL-Caltech Testing of a lightweight robotic helicopter designed to fly in the alien atmosphere of Mars has produced encouraging results in recent months, and NASA officials expect to decide soon whether the aerial drone will accompany the agency’s next rover to the red planet set for liftoff in 2020.Engineers at the Jet Propulsion Laboratory have worked on the helicopter design for several years,...

NASA is pressing forward on plans to build a Lunar Orbital Platform-Gateway, an outpost for astronauts positioned in the space near Earth's moon. According to NASA, the Gateway will not only be a place to live, learn and work around the moon but will also support an array of missions to the lunar surface. And scientists foresee a host of uses for the station. By making use of a suite of instruments housed on or inside the structure itself, or free-flying nearby, scientists could make Earth and solar observations. They could also carry out astrophysics and fundamental physics experiments. ......

Stars the mass of our Sun, and up to eight times more massive, evolve into red giants towards the end of their lives. Their outer layers puff up and expand millions of kilometres, their dusty, gassy shells blown away from the central star in relatively slow winds up to few hundreds of km/s. Even larger stars, up to 25–30 times more massive than the Sun, race through their fuel and explode in a supernova, sometimes leaving behind a spinning stellar corpse with a strong magnetic field, known as a neutron star. This tiny core packs the mass of nearly one...

Pres. Trump at CA Marine base: "Very soon we're going to Mars. You wouldn't have been going to Mars if my opponent won." https://t.co/7t9dGZXwSH pic.twitter.com/a3Cw5OIsue — ABC News Politics (@ABCPolitics) March 13, 2018 President Trump told troops in California on Tuesday that the U.S. would be going to Mars in the very near future. "Very soon we're going to Mars. You wouldn't be going to Mars if my opponent won, that I can tell you. You wouldn't even be thinking about it," Trump said. Trump signed a directive in December aiming to send Americans to the moon, and eventually Mars....

"Samples were intentionally saved for a time when technology and instrumentation had advanced to the point that we could maximize the scientific return on these unique samples," said NASA's Ryan Zeigler, Apollo sample curator and manager of the Astromaterials Acquisition and Curation Office in Houston. But such investigations require careful planning and execution by a consortium of experts with experience in handling and analyzing lunar samples... "Given the recent renewed interest in the moon, and specifically about the volatile budget of lunar regolith, these sealed samples likely contain information that would be important in the design of future lunar missions," Zeigler...

...there's been no concrete evidence of life ever having existed on the Red Planet -- that is, if you believe the official version of things. Barry DiGregorio, a researcher with the University of Buckingham, doesn't buy it, and he says he's already discovered clues to Mars' past in the form of fossilized alien tracks. Now, he's trying to get others on board with his theory and blow the top off of an alleged NASA cover-up in the process. DiGregorio... believes previously-released NASA imagery from the planet offers clear evidence of Martian tracks. He believes photos showing small indentations in rock...