Space and astronomy news
What is the greatest challenge facing humans as we prepare for the first crewed missions to Mars? Solar and cosmic radiation? Atrophying bone and muscle? Growing food? How about laundry? It’s strange but true, right now we don’t have a way to clean laundry in space.
Continue reading “Socks, The Final Frontier”
Spaceflight can be dangerous – and not just because astronauts are strapped to an ongoing massive explosion for their ascent into orbit. Its long-term effects on the human body are starting to come more clearly into focus, and so far, none of the answers have been good. Now a new study from Mount Sinai Medical Hospital has found that, even on relatively short duration spaceflights, astronauts suffer potentially damaging DNS mutations.
Continue reading “Even Short Flights to Space Cause Cell Mutations That Could Lead to Cancer and Heart Disease”
* Warning: Mild Spoilers Ahead *
The Apple TV+ series, For All Mankind, just wrapped up Season 3 and is a smash hit for both critics and fans, garnering Rotten Tomatoes ratings of 90% and 81%, respectively. It’s a show that (probably) came about from the Amazon hit, The Man in the High Castle, which depicted a world after the Allies lost World War II, and also garnered favorable ratings of 84% and 81%, respectively, having both fantastic characters and writing.
Continue reading “‘For All Mankind’ Gives Harsh Reality Check About Human Space Exploration”
In the near future, NASA and other space agencies will send astronauts beyond Low Earth Orbit (LEO) for the first time in over fifty years. But unlike the Apollo Era, these missions will consist of astronauts spending extended periods on the Moon and traveling to and from Mars (with a few months of surface operations in between). Beyond that, there’s also the planned commercialization of LEO and cis-Lunar space, meaning millions of people could live aboard space habitats and surface settlements well beyond Earth.
This presents many challenges, which include the possibility that the sick and injured won’t have licensed medical practitioners to perform potentially life-saving surgery. To address this, Professor Shane Farritor and his colleagues at the University of Nebraska-Lincoln’s (UNL) Nebraska Innovation Campus (NIC) have developed the Miniaturized In-vivo Robotic Assistant (MIRA). In 2024, this portable miniaturized robotic-assisted surgery (RAS) platform will be flown to the International Space Station (ISS) for a test mission to evaluate its ability to perform medical procedures in space.
Continue reading “A Remote Surgical Robot is Going to the International Space Station”
In 1948/49, famed computer scientist, engineer, and physicist John von Neumann introduced the world to his revolutionary idea for a species of self-replicating robots (aka. “Universal Assemblers”). In time, researchers involved in the Search for Extraterrestrial Intelligence (SETI) adopted this idea, stating that self-replicating probes would be an effective way to explore the cosmos and that an advanced species may be doing this already. Among SETI researchers, “Von Neumann probes” (as they’ve come to be known) are considered a viable indication of technologically advanced species (technosignature).
Given the rate of progress with robotics, it’s likely just a matter of time before humanity can deploy Von Neumann probes, and the range of applications is endless. But what about the safety implications? In a recent study by Carleton University Professor Alex Ellery explores the potential harm that Von Neumann Probes could have. In particular, Ellery considers the prospect of runaway population growth (aka. the “grey goo problem”) and how a series of biologically-inspired controls that impose a cap on their replication cycles would prevent that.
Continue reading “Before we Develop Self-Replicating Machines to Explore the Universe, we Should Figure out how to Turn Them off Again”
It’s well-known that spending long periods in microgravity can adversely affect astronaut health and physiology. According to decades of research performed aboard the International Space Station (ISS), like NASA’s much-popularized Twins Study, these effects include the loss of muscle mass and bone density, as well as changes to cardiovascular health, eyesight, organ function, and gene expression. There’s even the possibility that astronauts will experience mood swings and psychological problems while in space or during recovery here on Earth.
According to a recent study by a team of Japanese researchers, one of the lesser-studied effects is how long periods spent in microgravity can damage the skeletal muscles that are important to maintaining our posture. This group of muscles – located mostly in our limbs, back, and neck – are rightly known as our “anti-gravity” muscles because they are load-bearing and allow us to stand upright and move against the force of gravity. This research and the countermeasures they propose could have significant implications for astronauts returning from long-term stays in space.
Continue reading “Japanese Researchers Show how Microgravity Affects Astronauts’ Muscles and Nerves”
NASA is reviewing its mission to visit the asteroid 16 Psyche. The Administration has convened a 15-member review board to examine the mission and its failure to meet the scheduled 2022 launch. The review began on July 19, and the board will present their findings to NASA and JPL in late September.
Continue reading “Uh Oh, NASA is Reviewing Psyche and May Terminate the Mission”
The Space Elevator is one of those ideas that seems to have an endless supply of lives. Originally proposed about a century ago, this concept calls for a tether of supermaterial that connects a station in orbit to Earth’s surface. Our planet’s rotation would keep this tether taut, and a system of “climbers” would transport people and payloads to and from space. The engineering challenges and costs associated with such a structure have always been enormous. But every generation or so, new research comes along that causes engineers and space agencies to reevaluate the concept.
The single-greatest challenge has always been the tether since no known material has ever been strong enough to handle the stresses involved. But as it turns out, this issue may finally be resolved! According to scientists with the International Space Elevator Consortium (ISEC), a cost-effective manufacturing process could produce graphene ribbons that are strong enough to fashion a tether! Their latest findings are detailed in a paper they will present at the upcoming 2022 International Astronomical Congress in Paris.
Continue reading “A New Method for Making Graphene has an Awesome Application: A Space Elevator!”
The planet Mars is calling to us. At least, that is the impression one gets when examining all the planned and proposed missions to the Red Planet in the coming decade. With so many space agencies currently sending missions there to characterize its environment, atmosphere, and geological history, it seems likely that crewed missions are right around the corner. In fact, both NASA and China have made it clear that they intend to send missions to Mars by the early 2030s that will culminate in the creation of surface habitats.
To ensure astronaut health and safety, both in transit and on the surface of Mars, scientists are investigated several means of radiation protection. In a recent study, a team from the Blue Marble Space Institute of Science (BMSIS) studied how various materials could be used to fashion radiation-protective structures. This included materials brought from Earth and those that can be harvested directly from the Martian environment. This is in keeping with the In-Situ-Resource-Utilization (ISRU) process, where local resources are leveraged to meet the needs of the astronaut crews and the mission.
Continue reading “What is the Best Radiation Shielding for the Surface of Mars?”
Ever since astronomers found that Earth and the Solar System are not unique in the cosmos, humanity has dreamed of the day when we might explore nearby stars and settle extrasolar planets. Unfortunately, the laws of physics impose strict limitations on how fast things can travel in our Universe, otherwise known as Einstein’s General Theory of Relativity. Per this theory, the speed of light is constant and absolute, and objects approaching it will experience an increase in their inertial mass (thereby requiring more mass to accelerate further).
While no object can ever reach or exceed the speed of light, there may be a loophole that allows for Faster-Than-Light (FTL) travel. It’s known as the Alcubierre Warp Metric, which describes a warp field that contracts spacetime in front of a spacecraft and expands it behind. This would allow the spacecraft to effectively travel faster than the speed of light while not violating Relativity or causality. For more than a decade, Dr. Harold “Sonny” White has been investigating this theory in the hopes of bringing it closer to reality.
Previously, Dr. White pursued the development of an Alcubierre Warp Drive with his colleagues at the Advanced Propulsion Physics Research Laboratory (NASA Eagleworks) at NASA’s Johnson Space Center. In 2020, he began working with engineers and scientists at the Limitless Space Institute, a non-profit organization dedicated to education, outreach, research grants, and the development of advanced propulsion methods – which they hope will culminate in the creation of the first warp drive!
Continue reading “The Dream of Faster-than-Light (FTL) Travel: Dr. Harold “Sonny” White and Limitless Space”