HOW MARS GOT ITS GROOVES BACK Dubbed linear gullies, these long grooves appear on the sides of some sandy slopes during Martian spring. They have nearly constant widths, extend for as long as two kilometers, and have raised banks along their sides. Unlike most water flows, they do not appear to have areas of dried debris at the downhill end. A leading hypothesis — actually being tested here on Earth — is that these linear gullies are caused by chunks of dry ice breaking off and sliding down hills while sublimating into gas, eventually completely evaporating into thin air. Or, there are aliens. Aliens on Mars. And these are the tracks of their peers. (Photo: HiRISE, MRO, LPL (U. Arizona) via NASA APOD)
# when I took my senior survey course # and we did a whole two months on mars research # we did not come up with anything about dry ice to explain these # we were all 'SALTY BRINE FLOWS' # but dude the dry ice thing would be much more logical # science! # mars
HA HAAAA! MY EXPERIMENT WAS A SUCCESS! IF I HAD LISTENED TO THOSE FRIGHTENED FOOLS IT COULD HAVE TAKEN DECADES OF ETHICAL DEBATES AND REGULATORY DELAYS BEFORE WE ACHIEVED THIS LEVEL OF VIABLE PROOF!
ADMITTEDLY, THE SATISFACTION I FEEL AS A RESULT OF MY UNORTHODOX SCIENTIFIC ACUMEN IS TEMPERED BY THE FACT THAT I CAN’T POINT MY FACE IN THE DIRECTION I WISH TO WALK, PLUS I CAN’T REALLY SEE ANYTHING, BUT BY GOD I’M NOT ABOUT TO LET THAT STOP ME FROM PUBLISHING MY RESULTS!
CAN SOMEONE BRING ME MY LAPTOP, PLEASE?
# Science! # the mad scientist's guide to world domination # is a book that probably could have featured this horror
SAMPLE STALE More than 40 years after the first Apollo mission landed on the Moon, vials of lunar dust were found sitting inside a warehouse at the Lawrence Berkeley National Laboratory, untouched since being brought back to Earth by astronauts Neil Armstrong, Buzz Aldrin and Michael Collins and having been studied by scientists for possible pathogens. (via Space.com)
# old samples lying around for years # yup. sounds like LBL # our department has its share of old stuff too # not moon dust though # science!
Changing Seasons on Mars
The High Resolution Imaging Science Experiment (HiRISE) camera on NASA’s Mars Reconnaissance Orbiter snapped this series of false-color pictures of sand dunes in the north polar region of Mars. The area covered in each of the five panels is about 0.8 mile (1.3 kilometers) wide.
The progression begins at left (Panel A) in early spring, when the ground is covered by a seasonal layer of carbon dioxide ice (dry ice) about 2 feet thick. As spring progresses the ice cracks (Panel B), releasing dark sand from the dune below. When pressurized gas trapped below the ice layer is released, it carries along sand and dust to the top of the ice layer, where it is dropped in fan-shaped deposits downhill and downwind (panels C and D). The final panel shows more and more of the dark dunes as the overlying layer of seasonal ice evaporates back into the atmosphere.
The location in this series of images is at 80 degrees north latitude, 122.5 degrees east longitude.
image: NASA/JPL-Caltech/Univ. of Arizona
# mars # HiRISE # I spent months reading papers about mars my final semester of undergrad # SCIENCE! # space
Stargazers have captured stunning photos of Comet Pan-STARRS and Lemmon together in the night sky.
# mercury # the planet not the element # space # SCIENCE!
Science Day in India, posting whole series of Scientists, their inventions or discoveries.
# where is the super hd version so I can read it # SCIENCE! # space
I am so glad someone made this cuz I’ve always wondered how the movement of the solar system might look as a whole….
BUT LOOK HOW EPIC THE SOLAR SYSTEM IS GUYS
PEOPLE DON’T BELIEVE ME WHEN I SAY WE’RE NEVER IN THE SAME PLACE ONCE.
I WASN’T FUCKING KIDDING.
Dairine’s frame of reference suddenly became huger than the whole Earth and the space that contained it, so that her planet seemed only one moving, whirling point plunging along its path through a terrible complexity of forces, among which gravity was a puny local thing and not to be regarded. …Earth spins at seventeen thousand miles an hour, plows along its orbital path at a hundred seventy-five thousand; and the Sun takes it and the whole Solar System off toward the constellation Hercules at a hundred fifteen thousand miles an hour. Then the Sun’s motion as one of innumerable stars in the Sagittarius Arm of the Galaxy sweeps it along at some two million miles an hour, and all the while relationships between individual stars, and those of stars to their planets, shift and change.
It all meant that any one person standing still on any planet was in fact traveling a crazed, corkscrewing path through space, at high speed: and the disorientation and sickness [of personal worldgating travel] were apparently the cause of suddenly, and for the first time, going in a straight line, in a universe where space itself and everything in it is curved….
(High Wizardry, 1990)
# this is gorgeous # space # solar system # SCIENCE! # with bonus!excerpt from one of my favorite book series
# CACKLING # best chem-physics experiment ever # cuz you know: surface tension and pits in the candy surface and carbonation # SCIENCE!
EARTH YOU ARE DRUNK.
Sorry, but i refuse to believe the first one is real.
since i’ve answered this a million times, i’ve actually bookmarked the website
Reality is a fucking madhouse.
# oooh nifty # SCIENCE! # nature # the stairs are hella cool too
this chick put a camera on a hula hoop and it’s trippy as hell
BARKS AT IT
RELATIVITY MUTHA FOOKERS! xD
BARK. BARK BARK. BAAAAAAAAAAARK.
Oh my god I was actually getting dizzy lol. That doesn’t happen often. I love how this looks. Relativity is the perfect word for it; because as far as the hula hoop’s horizon is concerned, it’s perfectly stable and still and the rest of the world is going nuts around it. From the outside perspective the hula hoop is spinning and crazy, and the world is still.
# choosing frames of reference was one of my favorite parts of setting up physics problems # back when I still studied physics # SCIENCE! # oooh nifty
Overly Honest Methods
As a grad student, and a scientist, I found these to be hysterical……and frighteningly accurate!!!!!
Like seriously, this exists??
Reblogging for the scientific peeps, you know who you are! XD
# this is why I'm not allowed to write the papers at work # SCIENCE! # also totally legit things that happen in labs # especially the last three
# geology # fluid dynamics # science! # oooh nifty
The Beautiful Blackboards of Quantum Physics Labs
Alejandro Guijarro visited the world’s finest quantum physics labs to record their half-erased blackboards. In an era where science is increasingly all-digital, it’s a striking reminder that science is still an active, hands-on process, a process here captured in layers of smeared chalk.