Here’s another gorgeous timelapse by Gavin Heffernan, who returned to Joshua Tree National Park in California for his third look at the incredible night sky. “It was an epic night,” Gavin told UT, “with storms at first, then some of the clearest skies I’ve ever seen.”
The sky is ablaze with activity; the rolling storm, the Milky Way in all its glory, plus meteors, satellites and aircraft passing overhead. Gavin and his Sunchaser Pictures team shot the footage with a Canon 7D and Canon 5D, with a 24mm/1.4 lens and a 28mm/1.8. Most intervals are 25 seconds, except the 1st, which is 30 second, Gavin said.
If you like this one, take a look at Gavin’s first and second visits to Joshua Tree, too.
The PBS special “Ultimate Mars Challenge” that aired this week in the US is now available on YouTube. The production crew did a great job capturing the challenges of putting this mission together, and included scenes from building and testing the rover here on Earth to the nail-biting landing to even including some of the most recent images and discoveries from the mission.
Note: if the video above doesn’t play in your country, try going to the PBS NOVA website and watching it there. You can read more information about the episode here. As we mentioned previously, some of the mosaics and panoramas put together by Universe Today writer Ken Kremer, along with his imaging team partner Marco Di Lorenzo, were used in the PBS show. Congrats to Ken and Marco! Below is one of their images that was used:
Curiosity looks back to her rover tracks and the foothills of Mount Sharp and the eroded rim of Gale Crater in the distant horizon on Sol 24 (Aug. 30, 2012). This panorama is featured on PBS NOVA Ultimate Mars Challenge’ documentary premiering on Nov. 14. The colorized mosaic was stitched together from Navcam images. Credit: NASA / JPL-Caltech / Ken Kremer / Marco Di Lorenzo
In this new video, SETI founder Frank Drake and astronomer Jill Tarter about why the search of the cosmos is important and needed. Visit SETI online to learn more about the search for signals of extraterrestrial life using radio telescopes on Earth and how you can help.
From the initial expansion of the Big Bang to the birth of the Moon, from the timid scampering of the first mammals to the rise — and fall — of countless civilizations, this fascinating new video by melodysheep (aka John D. Boswell) takes us on a breathless 90-second tour through human history — starting from the literal beginnings of space and time itself. It’s as imaginative and powerful as the most gripping Hollywood trailer… and it’s even inspired by a true story: ours.
Here’s a mesmerizing video from the folks over at NASA’s Goddard Space Flight Center’s visualization studio showing the Sun in a whole new light… well, a reprocessed light anyway.
Using what’s called a gradient filter, images of the Sun can be adjusted to highlight the intricate details of its dynamic atmosphere. Magnetic activity that’s invisible to human vision can be brought into view, showing the powerful forces in play within the Sun’s corona and helping researchers better understand how it affects space weather. (Plus they sure are pretty!)
Compiled into a video, these images reveal the hidden beauty — and power — of our home star in action.
The International Space Station appears to go to warp speed — a la Star Trek, Star Wars and almost every other space flick — in this new video created by Christoph Malin, who “stacked” image sequences that the ISS crew at International Space Station have been taking lately. These are the images that have been used to create the great timelapse videos, that provide a sense of what it is like to fly over the Earth on the space station. But this one is different, and as Malin says, “Stacks make interesting patterns visible, for example lightning corridors within clouds. One can also sometimes recognize satellite tracks and meteors – patterns that are not amongst the main star trails.”
Felix Baumgartner salutes his suit-mounted camera before stepping off his capsule’s platform at 128,000 feet (Red Bull Stratos)
Yesterday, October 14, Austrian pilot and BASE jumper Felix Baumgartner became the first person to skydive from over 128,000 feet, breaking the sound barrier during his 4 minute, 20 second plummet from the “edge of space.” A new video from Red Bull Stratos includes views from Felix’s suit-mounted cameras as he drops through virtually no atmosphere, smoothly at first but then going into a wild spin… but eventually stabilizing himself for the remainder of his fall and opening his chute at just over 6,000 feet. Incredible!
Check out the video below:
Here’s how Baumgartner described the spin and how he got out of it during the press conference after his jump yesterday:
“It started out really good because my exit was perfect, I did exactly what I was supposed to do… It looked like for a second I was going to tumble two more times and then get it under control, but for some reason that spin became so violent over all axis and it was hard to know how to get out of it, because, if you are trapped in a pressurized suit – normally as a skydiver you can feel the air and get direct feedback from the air — but here you are trapped in a suit that is pressurized at 3.5 PSI so you don’t know how to feel the air. It is like swimming without touching the water. And it’s hard because every when time it turns you around you have to figure out what to do. So I was sticking my arm out and it became worse and then I stuck arm out the other side and it became less, so I was fighting all the way down to regain control because I wanted to break the speed of sound. And I hit it. I don’t know how many seconds, but I could feel air was building up and then I hit it.”
So, in that quote, Baumgartner seemed to describe that he could feel when he broke the speed of sound, but in answering the next question of how it felt, he kind of backtracked and said he didn’t feel it.
“It’s hard to describe because I didn’t feel it. When you are in the pressure suit, you don’t feel anything, it is like being in a cast…. We have to look at the data – at what point did it happen — was I still spinning or was I under control? If you want to chart speed you need a reference point of things that pass you by, or sound, or your suit if flapping. I didn’t have that.”
Read more about Baumgartner’s record (and sound!) -breaking achievement and see lots more images and video here.
ADDED: A version of the video showing his chute opening (and with some background music added) can be found here on iloveskydiving.org.
Today, Mars is a barren desert. But millions of years ago could our planetary neighbor have been much more Earth-like – covered with rivers, oceans, and even life? A new video series called EPIPHANY, Dr. Ashwin Vasavada, NASA’s Deputy Project Scientist of the Mars Science Laboratory shares how the Mars Curiosity rover is going to shed new light on the ancient history of Mars and whether life could have ever existed there. While Curiosity is not equipped to look for life itself, it will look for “the ingredients of life,” the essential molecules and elements that go into living things. Already, at just 50 sols into the mission, the rover has found an ancient streambed and as Project Scientist John Grotzinger said, “We have already found our first potentially habitable environment.”
How do magnets affect things at a distance? How does the Sun heat our planet from 93 million miles away? How can we send messages across the world with our cell phones? We take these seemingly simple things for granted, but in fact there was a time not too long ago when the processes behind them were poorly understood, if at all… and, to the uninformed, there could seem to be a certain sense of “magic” about them.
This video from MinutePhysics, featuring director of the Perimeter Institute for Theoretical Physics Neil Turok, illustrates how our understanding of electromagnetic fields was developed and why there’s nothing magic about it… except, perhaps, how they pack all that excellent info into 5 minutes. Enjoy!
Frame from a simulation of the merger of two black holes and the resulting emission of gravitational radiation (NASA/C. Henze)
The short answer? You get one super-SUPERmassive black hole. The longer answer?
Well, watch the video below for an idea.
This animation, created with supercomputers at the University of Colorado, Boulder, show for the first time what happens to the magnetized gas clouds that surround supermassive black holes when two of them collide.
The simulation shows the magnetic fields intensifying as they contort and twist turbulently, at one point forming a towering vortex that extends high above the center of the accretion disk.
This funnel-like structure may be partly responsible for the jets that are sometimes seen erupting from actively feeding supermassive black holes.
The simulation was created to study what sort of “flash” might be made by the merging of such incredibly massive objects, so that astronomers hunting for evidence of gravitational waves — a phenomenon first proposed by Einstein in 1916 — will be able to better identify their potential source.
Gravitational waves are often described as “ripples” in the fabric of space-time, infinitesimal perturbations created by supermassive, rapidly rotating objects like orbiting black holes. Detecting them directly has proven to be a challenge but researchers expect that the technology will be available within several years’ time, and knowing how to spot colliding black holes will be the first step in identifying any gravitational waves that result from the impact.
In fact, it’s the gravitational waves that rob energy from the black holes’ orbits, causing them to spiral into each other in the first place.
“The black holes orbit each other and lose orbital energy by emitting strong gravitational waves, and this causes their orbits to shrink. The black holes spiral toward each other and eventually merge,” said astrophysicist John Baker, a research team member from NASA’s Goddard Space Flight Center. “We need gravitational waves to confirm that a black hole merger has occurred, but if we can understand the electromagnetic signatures from mergers well enough, perhaps we can search for candidate events even before we have a space-based gravitational wave observatory.”
The video below shows the expanding gravitational wave structure that would be expected to result from such a merger:
If ground-based telescopes can pinpoint the radio and x-ray flash created by the mergers, future space telescopes — like ESA’s eLISA/NGO — can then be used to try and detect the waves.
