Welcome toAtheist Universe
Sign Upor Sign In
Or sign in with:
Imagine No Religion
We are a worldwide social network of freethinkers, atheists, agnostics and secular humanists.
Give a Gift
Give a Gift
Give a Gift
Give a Gift
Give a Gift
Give a Gift
Cosmology Astrophysics Astronomy
Latest Activity: yesterday
Cosmology - Astrophysics - Astronomy
Hubble Wallpaper - Awesome Hubble Images
Started by May the Big Bang RIP. Last reply by May the Big Bang RIP Jul 23, 2017.
Started by Mrs.B. Last reply by Mrs.B Apr 9, 2016.
Started by Davy. Last reply by Onyango Makagutu Mar 8, 2016.
Started by Davy Oct 3, 2013.
Started by Davy. Last reply by Davy Aug 15, 2013.
The Last Goodbye
Ask Ethan: Why Did Light Arrive 1.7 Seconds After Gravitational Waves In The Neutron Star Merger?
Five Discoveries In Fundamental Physics That Came As Total Surprises
Even while the world suffers, investing in science is non-negotiable (Synopsis)
Merging Neutron Stars Deliver Deathblow To Dark Matter And Dark Energy Alternatives (Synopsis)
Lockheed's concept moon lander can carry four astronauts
The huge spacecraft can chill for up to 14 days on the lunar surface.
Lockheed Martin has unveiled the designs for a reusable lander built to ferry four astronauts and 1.1 tons of cargo between lunar orbit and the surface of the moon. Leveraging tech from the aerospace giant's Orion spacecraft for deep-space missions, the 14-meter, single-stage vessel can camp for up to 14 days on the moon. Upon touchdown, the crew will use the craft's lift elevator platform to get from the cabin to the surface, before blasting back to their home base aboard the Lunar Orbital Platform-Gateway -- a small space station that NASA plans to start constructing in 2022.With enough juice to last the full two weeks, refuelling would take place between missions, though the lander can also be powered up on the surface. The preliminary concept relies on four modified RL10 engines, but other engines could also be utilized.
Lockheed's vehicle would be be twice as tall as the Lunar Module used during the Apollo missions to the Moon nearly half a century ago, reports Ars Technica, which carried two astronauts for brief stints of just a few days. The company says it will also serve as a precursor for its Mars lander -- also built to carry four people -- which is integral to its Mars Base Camp orbiting mission.Last December, Donald Trump signed off on a space policy directive that calls for NASA, along with its private partners, to send astronauts to the Moon and, "eventually," Mars. And Lockheed is one of the private sector companies vying to be part of the exploration program. The company claims its lunar lander will be ready by the late-2020s, according to Space.com."The Gateway is key to full, frequent and fast reusability of this lander," said Tim Cichan, space exploration architect at Lockheed Martin Space, who presented the lander concept at the International Astronautical Congress in Bremen, Germany. "Because this lander doesn't have to endure the punishment of re-entering Earth's atmosphere, it can be re-flown many times over without needing significant and costly refurbishment. That's a major advantage of the Gateway and of a modular, flexible, reusable approach to deep space exploration."
NASA activated Curiosity's second 'brain' after it misbehaved
Maybe it just wants a rest?
Tired? Sluggish? Wouldn't it be great if you could just switch your brain to a better functioning version? Well, that's a privilege you can enjoy if you're the Mars Curiosity rover. NASA's intrepid explorer has been subject to a few technical problems over the last two weeks, which means it's been struggling to send its data back to Earth, so engineers have decided to activate Curiosity's second brain.
Curiosity has two "brains" (computers), Side A and Side B. It landed on Mars in 2012 with Side A activated, but was switched to Side B after it started ignoring orders. Curiosity's deputy project manager explained in a post that NASA is operating on Side A starting today, "but it could take us time to fully understand the root cause of the issue and devise workarounds for the memory on Side B." It is possible for Curiosity to continue its mission using Side A, but the team intends to switch back to B as that side has a larger memory. To be fair, Curiosity has been trundling along for six years now. Maybe it just needs a strong coffee.
Kind of sad.
Farewell Rosetta: ESA Mission to End on Comet Surfacehttps://www.jpl.nasa.gov/news/news.php?feature=6633
Active Prominences on a Quiet Sun Why is the Sun so quiet? As the Sun enters into a period of time known as a Solar Minimum, it is, as expected, showing fewer sunspots and active regions than usual. The quietness is somewhat unsettling, though, as so far this year, most days show no sunspots at all. In contrast, from 2011 - 2015, during Solar Maximum, the Sun displayed spots just about every day.
Maxima and minima occur on an 11-year cycle, with the last Solar Minimum being the most quiet in a century. Will this current Solar Minimum go even deeper? Even though the Sun's activity affects the Earth and its surroundings, no one knows for sure what the Sun will do next, and the physics behind the processes remain an active topic of research. The featured image was taken three weeks ago and shows that our Sun is busy even on a quiet day. Prominences of hot plasma, some larger than the Earth, dance continually and are most easily visible over the edge.
Image Credit & Copyright: Alan Friedman (Averted Imagination)
River Bends Through 1,000-Foot CanyonsAn astronaut aboard the International Space Station shot this photograph of the Green River flowing through deep, red rock canyons in eastern Utah. A main tributary of the Colorado River, the Green flows 730 miles (1,175 kilometers) through Wyoming, Colorado and Utah. The portion of the Green River in this image is just north of Canyonlands National Park.Bowknot Bend was named for the way the river loops back on itself. Located in Labyrinth Canyon about 25 miles west of Moab, Utah, this river bend runs 7.5 miles (12 kilometers) in a circular loop and ends up 1,200 feet (360 meters) from where it first started. When the two sides of the river merge someday, Bowknot Bend will break off from the main channel and form a lake.
Nice pic, Doone. It lacks evidence, but who needs that?
13.82 billion years after the Big Bang gave birth to the universe and all matter, some of that matter figured out that that's what happened, and made this handy infographic to explain it. https://www.graphicnews.com/en/pages/30454/SCIENCE-Big-Bang-birth-of-universe …
BINGO! We have a winner! Not even a spare square!
© 2018 Created by Atheist Universe.
Report an Issue |
Terms of Service
Please check your browser settings or contact your system administrator.