Space travel today is just too slow, so one rocket scientist is developing technology that could send humans to Mars in a matter of weeks.
My take on the MIT study.
Routine human missions to Mars would be much more efficient if they first swung by Earth’s Moon to pick up fuel for the trip, a new MIT strategic engineering study concludes. NASA’s 90’s-era mantra of “Back to the Moon and on to Mars” really does make sense, a new paper published in the Journal of Spacecraft and Rockets notes.
The idea is that a crewed mission to Mars would greatly save on fuel and launch costs if it first made an interplanetary pit stop at a space-based depot to pick up its needed fuel. In this case, such a depot would optimally be placed at the Earth-Moon Lagrange Point 2 (EML2), a point of gravitational equilibrium lying beyond the Moon’s far side.
Continue reading “Why An Interplanetary Fuel Stop Makes Sense For Human Missions To Mars” »
Our bodies aren’t meant for space. We require too much maintenance to speed through the stars. We need a steady supply of things absent from space — namely water, food and oxygen. We crave warmth but won’t find it in deep space, where the average temperature is −455 degrees Fahrenheit. Even if we could survive in an icy vacuum without sustenance, we’d probably go insane without distractions and room to move.
But aeronautic engineers believe they have found the key to solving that puzzle: put your space travelers to sleep. Long-term cryogenic and hibernative sleep may be the key to getting humans to Mars, and beyond. But it may first come to a spa near you.
“When the Rosetta spacecraft deployed the Philae lander to land on a comet last November, the world held its breath. … Little surprise too that space is back on the design agenda as a primary source of inspiration. Visiting Design Miami/Basel in June, it was obvious that the “Philae effect” was having an impact much closer to home.”
Why #SETI and Warp Drive don’t necessarily mix; although, I tend to think if #ET is out there it would have long figured out a way to manipulate spacetime for interstellar #FTL travel. It’s time mainstream #physics embraced the idea that Einstein’s axioms involving #lightspeed can be overcome. We’ve nothing to lose but lots to gain. Special thanks to Erika McGinnis for allowing me to publish her artwork.
For all the hype over the idea that someday, somehow we humans will voyage to the stars — not at a measly fraction of the speed of light — but several “warp” factors beyond light speed, it’s a prospect few physicists take seriously. Even mention of “warp drive” is borderline taboo in certain academic circles.
And the idea that Einstein’s Theory of Relativity and with it the axiom that the ultimate speed of light can never be violated is a tenet that most researchers who spend their time plying the nearby cosmos for artificial radio or laser beacons have taken to heart. It supports most SETI scientists’ long-held notion that Earth has never been visited by sentient extraterrestrials.
Making spaceships and electric supercars isn’t enough for Elon Musk. Meghan Daum meets the entrepreneur who wants to save the world.
The name sounds like a men’s cologne. Or a type of ox. It sounds possibly made up. But then, so much about Elon Musk seems the creation of a fiction writer—and not necessarily one committed to realism. At 44, Musk is both superstar entrepreneur and mad scientist. Sixteen years after cofounding a company called X.com that would, following a merger, go on to become PayPal, he’s launched the electric carmaker Tesla Motors and the aerospace manufacturer SpaceX, which are among the most closely watched—some would say obsessed-over—companies in the world. He has been compared to the Christian Grey character in the Fifty Shades of Grey movie, though not as often as he’s been called “the real Tony Stark,” referring to the playboy tech entrepreneur whose alter ego, Iron Man, rescues the universe from various manifestations of evil.
The Iron Man comparison is, strangely, as apt as it is hyperbolic, since Musk has the boyish air of a nascent superhero and says his ultimate aim is to save humanity from what he sees as its eventual and unavoidable demise—from any number of causes, carbon consumption high among them. (As it happens, he met with Robert Downey, Jr., to discuss the Tony Stark role, and his factory doubled as the villain’s hideaway in Iron Man 2.) To this end he’s building his own rockets, envisioning a future in which we colonize Mars, funding research aimed at keeping artificial intelligence beneficial to humanity, and making lithium-ion electric batteries that might, one day, put the internal-combustion engine out to pasture.
If humanity hopes to realize its dreams of exploring the stars, we’re going to need to find ways to recreate life on Earth aboard a spaceship. Simply stockpiling enough vital supplies isn’t going to cut it, which is what led Julian Melchiorri, a student at the Royal College of Art, to create an artificial biological leaf that produces oxygen just like the ones on our home planet do.
The problem with using natural foliage on our interstellar explorations is that plants may not flourish in zero gravity as much as we’d need them to. But since they’re a better way to produce oxygen than simply trying to carry countless tanks full of O2, Melchiorri wanted to engineer a better alternative that would easy survive the rigors of space travel.
Time for Humanity to discover what’s outside the backyard… (HD — 12/2014)
FOLLOW THE HYBRID LIBRARIAN:
Subscribe ▶ http://bit.ly/daretoknow
Facebook ▶ http://on.fb.me/170IAJK
Twitter ▶ http://bit.ly/14vhMgZ
Google+ ▶ http://bit.ly/15eoHil
Tumblr ▶ http://bit.ly/11UtNr1
Continue reading “Future’s 10 Mind-Blowing Scenarios for Interstellar Travel” »
Boeing has announced that the first satellite with all-electric propulsion is now fully operational. Launched last March, the ABS-3A 702SP (small platform) satellite was formally handed over to its owner, Bermuda-based telecommunications company ABS, on August 31. It will provide communications services to the Americas, Europe, the Middle East, and Africa.
ABS-3A launched on March 1 atop a Falcon 9 rocket from SpaceX’s Launch Complex 40 at Cape Canaveral Air Force Station, Florida along with EUTELSAT 115 West B. The geosynchronous comsat’s key technology is its Xenon Ion Propulsion System (XIPS). Previously, hybrid systems that use a mix of chemical and ion propellants have been sent into orbit, but this is the first time a satellite has been deployed with an all-electric drive.
Boeing says that the technology is based on 210,000 hours of ion propulsion flight experience and is 10 times more efficient than liquid-fueled rockets. Four 25-cm (9.8-in) thrusters using xenon as a propellant allow the 702SP satellite to maintain stationkeeping while using only 5 kg (11 lb) of fuel per year. This is a great saving because the satellite needs less fuel and smaller thrusters, which reduces launch costs.
