Impacts may spread life to other planets › News in Science (ABC Science) News in Science Monday, 29 August 2011 Stuart GaryABC Interplanetary colonists New computer simulations indicate microbes inside rocks blasted from Earth could survive long enough to reach other places in the solar system.
The study reported in the pre-press physics blog arXiv.org, and submitted for publication in the journal Icarus, is a new twist on the panspermia hypothesis that suggests the seeds for life on Earth come from outer space. Scientists including Mauricio Reyes-Ruiz from the Universidad Nacional Autonoma de Mexico used computer modelling to show how an asteroid or comet slamming into Earth with enough velocity would kick impact ejecta up into space.
Reyes-Ruiz and colleagues found depending on the velocity and impact location, debris would reach the orbits of the Moon, Venus, Mars, Jupiter and beyond. They placed a 30,000-year time limit on their computer model to take into account the damage done by radiation and cosmic rays on any bacteria surviving in the ejecta. Java 3-Body Problem Simulator. Learning_the_solar_system.jpg (650×4592) Phoenixchute_hirise_cut.jpg (1500×746) 265763main_carina07_hst_big_full. 40 Spectacular images of the Stellar Universe and beyond, from NASA. 40 Spectacular images of the Stellar Universe and beyond, from NASA Posted by Richie on Thursday, August 12, 2010 · 26 Comments “Where do we come from?
How did the universe begin? Why is the universe the way it is? How will it end?” The History of our Universe The most popular theory of our universe’s origin centers on a cosmic cataclysm unmatched in all of history—The Big Bang. Before the big bang, scientists believe, the entire vastness of the observable universe, including all of its matter and radiation, was compressed into a hot, dense mass just a few millimeters across. Big bang proponents suggest that some 10 billion to 20 billion years ago, a massive blast allowed all the universe’s known matter and energy—even space and time themselves—to spring from some ancient and unknown type of energy.
Scientists can’t be sure exactly how the universe evolved after the big bang. The big bang theory leaves several major questions unanswered. Astronaut Training Party. OK...the last of the 3 birthdays in a row is done!
Robbie's 5th birthday party was an astronaut space party...so here is your photo journey! The boys each received a box instead of just a card (boxes courtesy of USPS priority) Here was the invitation folder... Alien-contact. Happyla_jurasevich_big.jpg (JPEG Image, 2500x1667 pixels) - Scaled (35. Time-lapse of the 2010 Winter Solstice Lunar Eclipse. Launch_vernacotola.jpg (JPEG Image, 1009x768 pixels) - Scaled (77. Social Spew — Learning The Solar System, Meme Style.
New evidence that we could build water farms in space. @Nivenus: humans war over dumber "shortages.
" @mordicai: Eh, when it comes to resource wars we do tend to go for what's scarce (although this is always relative - some countries have more of a resource than others, naturally). Gold, oil, good iron ore, even theoretically (fresh) water while we're still Earth-based are all rare resources. The equivalent really would be if we warring over something as easily found as silicon dioxide (sand/glass/quartz), which is by far one of the most common chemical compounds on Earth. Ironically enough, while many elements are more common in space, silicon dioxide is fairly rare and is hardly found at all in the outer limits of the solar system.
I suppose one could imagine water wars breaking out during the early days of space colonization, when extracting it would remain an expensive, laborious affair. "Space Zen" -Will Humans' Brains Change During Space Travel? -A Galaxy Classic. In February, 1971, Apollo 14 astronaut Edgar Mitchell experienced the little understood phenomenon sometimes called the “Overview Effect”.
He describes being completely engulfed by a profound sense of universal connectedness. Without warning, he says, a feeing of bliss, timelessness, and connectedness began to overwhelm him. He describes becoming instantly and profoundly aware that each of his constituent atoms were connected to the fragile planet he saw in the window and to every other atom in the Universe. He described experiencing an intense awareness that Earth, with its humans, other animal species, and systems were all one synergistic whole. He says the feeling that rushed over him was a sense of interconnected euphoria. Rusty Schweikart experienced it on March 6th 1969 during a spacewalk outside his Apollo 9 vehicle: “When you go around the Earth in an hour and a half, you begin to recognize that your identity is with that whole thing. This is done with Faraday cages.