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We’re Landing a Rover on Mars in 2020…But How Do We Decide Where?
In 2020, we will launch our next Mars rover. It will journey more than 33 million miles to the Red Planet where it will land, explore and search for signs of ancient microbial life. But how do we pinpoint the perfect location to complete this science…when we’re a million miles away on Earth?
We utilize data sent to us by spacecraft on and orbiting Mars. That includes spacecraft that have recorded data in the past.
This week, hundreds of scientists and Mars enthusiasts are gathering to deliberate the four remaining options for where we’re going to land the Mars 2020 rover on the Red Planet.
The landing site for Mars 2020 is of great interest to the planetary community because, among the rover’s new science gear for surface exploration, it carries a sample system that will collect rock and soil samples and set them aside in a “cache” on the surface of Mars. A future mission could potentially return these samples to Earth. The next Mars landing, after Mars 2020, could very well be a vehicle which would retrieve these Mars 2020 samples.
Here’s an overview of the potential landing sites for our Mars 2020 rover…
Northeast Syrtis
This area was once warmed by volcanic activity. Underground heat sources made hot springs flow and surface ice melt. Microbes could have flourished here in liquid water that was in contact with minerals. The layered terrain there holds a rich record of interactions between water and minerals over successive periods of early Mars history.
Jezero Crater
This area tells a story of the on-again, off-again nature of the wet past of Mars. Water filled and drained away from the crater on at least two occasions. More than 3.5 billion years ago, river channels spilled over the crater wall and created a lake. Scientists see evidence that water carried clay minerals from the surrounding area into the crater after the lake dried up. Conceivably, microbial life could have lived in Jezero during one or more of these wet times. If so, signs of their remains might be found in lakebed sediments.
Columbia Hills
At this site, mineral springs once bubbled up from the rocks. The discovery that hot springs flowed here was a major achievement of the Mars Exploration Rover, Spirit. The rover’s discovery was an especially welcome surprise because Spirit had not found signs of water anywhere else in the 100-mile-wide Gusev Crater. After the rover stopped working in 2010, studies of its older data records showed evidence that past floods may have formed a shallow lake in Gusev.
Midway
Candidate landing sites Jezero and Northeast Syrtis are approximately 37 km apart…which is close enough for regional geologic similarities to be present, but probably too far for the Mars 2020 rover to travel. This midway point allows exploration of areas of both landing sites.
How Will We Select a Site?
The team is gathered this week for the fourth time to discuss these locations. It’ll be the final workshop in a series designed to ensure we receive the best and most diverse range of information and opinion from the scientific community before deciding where to send our newest rover.
The Mars 2020 mission is tasked with not only seeking signs of ancient habitable conditions on Mars, but also searching for signs of past microbial life itself. So how do we choose a landing site that will optimize these goals? Since InSight is stationary and needs a flat surface to deploy its instruments, we’re basically looking for a flat, parking lot area on Mars to land the spacecraft.
The first workshop started with about 30 candidate landing sites and was narrowed down to eight locations to evaluate further. At the end of the third workshop in February 2017, there were only three sites on the radar as potential landing locations…
…but in the ensuing months, a proposal came forward for a landing site that is in between Jezero and Northeast Syrtis – The Midway site. Since our goal is to get to the right site that provides the maximum science, this fourth site was viewed as worthy of being included in the discussions.
Now, with four sites remaining, champions for each option will take their turn at the podium, presenting and defending their favorite spot on the Red Planet.
On the final day, after all presentations have concluded, workshop participants will weigh the pros and cons of each site. The results of these deliberations will be provided to the Mars 2020 Team, which will incorporate them into a recommendation to NASA Headquarters. A final selection will be made and will likely be announced by the end of the year.
To get more information about the workshop, visit: https://marsnext.jpl.nasa.gov/workshops/wkshp_2018_10.cfm
Learn more about our Mars 2020 rover HERE.
Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com.
A Mesmerizing Model of Monster Black Holes
Just about every galaxy the size of our Milky Way (or bigger) has a supermassive black hole at its center. These objects are ginormous — hundreds of thousands to billions of times the mass of the Sun! Now, we know galaxies merge from time to time, so it follows that some of their black holes should combine too. But we haven’t seen a collision like that yet, and we don’t know exactly what it would look like.
A new simulation created on the Blue Waters supercomputer — which can do 13 quadrillion calculations per second, 3 million times faster than the average laptop — is helping scientists understand what kind of light would be produced by the gas around these systems as they spiral toward a merger.
The new simulation shows most of the light produced around these two black holes is UV or X-ray light. We can’t see those wavelengths with our own eyes, but many telescopes can. Models like this could tell the scientists what to look for.
You may have spotted the blank circular region between the two black holes. No, that’s not a third black hole. It’s a spot that wasn’t modeled in this version of the simulation. Future models will include the glowing gas passing between the black holes in that region, but the researchers need more processing power. The current version already required 46 days!
The supermassive black holes have some pretty nifty effects on the light created by the gas in the system. If you view the simulation from the side, you can see that their gravity bends light like a lens. When the black holes are lined up, you even get a double lens!
But what would the view be like from between two black holes? In the 360-degree video above, the system’s gas has been removed and the Gaia star catalog has been added to the background. If you watch the video in the YouTube app on your phone, you can moved the screen around to explore this extreme vista. Learn more about the new simulation here.
Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com.
https://instagram.com/p/BhjPiFKBLlB/
The most unrealistic part of “The Martian” is that Matt Damon was able to travel to Mars without Ben Affleck.
NASA’s New Planet Hunter Reveals a Sky Full of Stars
NASA’s newest planet-hunting satellite — the Transiting Exoplanet Survey Satellite, or TESS for short — has just released its first science image using all of its cameras to capture a huge swath of the sky! TESS is NASA’s next step in the search for planets outside our solar system, called exoplanets.
This spectacular image, the first released using all four of TESS’ cameras, shows the satellite’s full field of view. It captures parts of a dozen constellations, from Capricornus (the Sea Goat) to Pictor (the Painter’s Easel) — though it might be hard to find familiar constellations among all these stars! The image even includes the Large and Small Magellanic Clouds, our galaxy’s two largest companion galaxies.
The science community calls this image “first light,” but don’t let that fool you — TESS has been seeing light since it launched in April. A first light image like this is released to show off the first science-quality image taken after a mission starts collecting science data, highlighting a spacecraft’s capabilities.
TESS has been busy since it launched from NASA’s Kennedy Space Center in Cape Canaveral, Florida. First TESS needed to get into position, which required a push from the Moon. After nearly a month in space, the satellite passed about 5,000 miles from the Moon, whose gravity gave it the boost it needed to get into a special orbit that will keep it stable and maximize its view of the sky.
During those first few weeks, we also got a sneak peek of the sky through one of TESS’s four cameras. This test image captured over 200,000 stars in just two seconds! The spacecraft was pointed toward the constellation Centaurus when it snapped this picture. The bright star Beta Centauri is visible at the lower left edge, and the edge of the Coalsack Nebula is in the right upper corner.
After settling into orbit, scientists ran a number of checks on TESS, including testing its ability to collect a set of stable images over a prolonged period of time. TESS not only proved its ability to perform this task, it also got a surprise! A comet named C/2018 N1 passed through TESS’s cameras for about 17 hours in July.
The images show a treasure trove of cosmic curiosities. There are some stars whose brightness changes over time and asteroids visible as small moving white dots. You can even see an arc of stray light from Mars, which is located outside the image, moving across the screen.
Now that TESS has settled into orbit and has been thoroughly tested, it’s digging into its main mission of finding planets around other stars. How will it spot something as tiny and faint as a planet trillions of miles away? The trick is to look at the star!
So far, most of the exoplanets we’ve found were detected by looking for tiny dips in the brightness of their host stars. These dips are caused by the planet passing between us and its star – an event called a transit. Over its first two years, TESS will stare at 200,000 of the nearest and brightest stars in the sky to look for transits to identify stars with planets.
TESS will be building on the legacy of NASA’s Kepler spacecraft, which also used transits to find exoplanets. TESS’s target stars are about 10 times closer than Kepler’s, so they’ll tend to be brighter. Because they’re closer and brighter, TESS’s target stars will be ideal candidates for follow-up studies with current and future observatories.
TESS is challenging over 200,000 of our stellar neighbors to a staring contest! Who knows what new amazing planets we’ll find?
The TESS mission is led by MIT and came together with the help of many different partners. You can keep up with the latest from the TESS mission by following mission updates.
Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com.
Spilling the Sun’s Secrets
You might think you know the Sun: It looks quiet and unchanging. But the Sun has secrets that scientists have been trying to figure out for decades.
One of our new missions — Parker Solar Probe — is aiming to spill the Sun’s secrets and shed new light on our neighbor in the sky.
Even though it’s 93 million miles away, the Sun is our nearest and best laboratory for understanding the inner workings of stars everywhere. We’ve been spying on the Sun with a fleet of satellites for decades, but we’ve never gotten a close-up of our nearest star.
This summer, Parker Solar Probe is launching into an orbit that will take it far closer to the Sun than any instrument has ever gone. It will fly close enough to touch the Sun, sweeping through the outer atmosphere — the corona — 4 million miles above the surface.
This unique viewpoint will do a lot more than provide gossip on the Sun. Scientists will take measurements to help us understand the Sun’s secrets — including those that can affect Earth.
Parker Solar Probe is equipped with four suites of instruments that will take detailed measurements from within the Sun’s corona, all protected by a special heat shield to keep them safe and cool in the Sun’s ferocious heat.
The corona itself is home to one of the Sun’s biggest secrets: The corona’s mysteriously high temperatures. The corona, a region of the Sun’s outer atmosphere, is hundreds of times hotter than the surface below. That’s counterintuitive, like if you got warmer the farther you walked from a campfire, but scientists don’t yet know why that’s the case.
Some think the excess heat is delivered by electromagnetic waves called Alfvén waves moving outwards from the Sun’s surface. Others think it might be due to nanoflares — bomb-like explosions that occur on the Sun’s surface, similar to the flares we can see with telescopes from Earth, but smaller and much more frequent. Either way, Parker Solar Probe’s measurements direct from this region itself should help us pin down what’s really going on.
We also want to find out what exactly accelerates the solar wind — the Sun’s constant outpouring of material that rushes out at a million miles per hour and fills the Solar System far past the orbit of Pluto. The solar wind can cause space weather when it reaches Earth — triggering things like the aurora, satellite problems, and even, in rare cases, power outages.
We know where the solar wind comes from, and that it gains its speed somewhere in the corona, but the exact mechanism of that acceleration is a mystery. By sampling particles directly at the scene of the crime, scientists hope Parker Solar Probe can help crack this case.
Parker Solar Probe should also help us uncover the secrets of some of the fastest particles from the Sun. Solar energetic particles can reach speeds of more than 50% the speed of light, and they can interfere with satellites with little warning because of how fast they move. We don’t know how they get so fast — but it’s another mystery that should be solved with Parker Solar Probe on the case.
Parker Solar Probe launches summer 2018 on a seven-year mission to touch the Sun. Keep up with the latest on the Sun at @NASASun on Twitter, and follow along with Parker Solar Probe’s last steps to launch at nasa.gov/solarprobe.
Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com.
I’m only $100 away from being able to afford my plane ticket!!
Please help me get to Florida for my grandmother’s funeral. Message if you would like to donate! I am giving away tons of great slutty content in return!!
Please reblog my posts! ❤
If you guys could please reblog this I would really appreciate it. ❤
My grandma passed away yesterday morning. She was really sick and suffered terribly at the end. She raised me when I was a kid and she was the greatest woman I’ve ever known. I could not afford to make it down to Florida in time to say goodbye and I’m completely devastated.
I simply can’t afford a plane ticket. I’m trying to save up enough to drive down for the memorial service. Anyone who is willing to donate to help me get to Florida will be greatly appreciated and you’ll receive content in return!! ❤
$25 donation - Lifetime Access to my NSFW Snapchat + 1 free video
$50 donation - Lifetime Access to my NSFW Snapchat + Lifetime Access to my Private NSFW Tumblr Blog + 2 free videos
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Please reblog this post and my other content!
And please send some positive healing vibes my way. Thanks everyone ❤
Help the lady out!!!!
Time to tune.
9 Ocean Facts You Likely Don’t Know, but Should
Earth is a place dominated by water, mainly oceans. It’s also a place our researchers study to understand life. Trillions of gallons of water flow freely across the surface of our blue-green planet. Ocean’s vibrant ecosystems impact our lives in many ways.
In celebration of World Oceans Day, here are a few things you might not know about these complex waterways.
1. Why is the ocean blue?
The way light is absorbed and scattered throughout the ocean determines which colors it takes on. Red, orange, yellow,and green light are absorbed quickly beneath the surface, leaving blue light to be scattered and reflected back. This causes us to see various blue and violet hues.
2. Want a good fishing spot?
Follow the phytoplankton! These small plant-like organisms are the beginning of the food web for most of the ocean. As phytoplankton grow and multiply, they are eaten by zooplankton, small fish and other animals. Larger animals then eat the smaller ones. The fishing industry identifies good spots by using ocean color images to locate areas rich in phytoplankton. Phytoplankton, as revealed by ocean color, frequently show scientists where ocean currents provide nutrients for plant growth.
3. The ocean is many colors.
When we look at the ocean from space, we see many different shades of blue. Using instruments that are more sensitive than the human eye, we can measure carefully the fantastic array of colors of the ocean. Different colors may reveal the presence and amount of phytoplankton, sediments and dissolved organic matter.
4. The ocean can be a dark place.
About 70 percent of the planet is ocean, with an average depth of more than 12,400 feet. Given that light doesn’t penetrate much deeper than 330 feet below the water’s surface (in the clearest water), most of our planet is in a perpetual state of darkness. Although dark, this part of the ocean still supports many forms of life, some of which are fed by sinking phytoplankton.
5. We study all aspects of ocean life.
Instruments on satellites in space, hundreds of kilometers above us, can measure many things about the sea: surface winds, sea surface temperature, water color, wave height, and height of the ocean surface.
6. In a gallon of average sea water, there is about ½ cup of salt.
The amount of salt varies depending on location. The Atlantic Ocean is saltier than the Pacific Ocean, for instance. Most of the salt in the ocean is the same kind of salt we put on our food: sodium chloride.
7. A single drop of sea water is teeming with life.
It will most likely have millions (yes, millions!) of bacteria and viruses, thousands of phytoplankton cells, and even some fish eggs, baby crabs, and small worms.
8. Where does Earth store freshwater?
Just 3.5 percent of Earth’s water is fresh—that is, with few salts in it. You can find Earth’s freshwater in our lakes, rivers, and streams, but don’t forget groundwater and glaciers. Over 68 percent of Earth’s freshwater is locked up in ice and glaciers. And another 30 percent is in groundwater.
9. Phytoplankton are the “lungs of the ocean”.
Just like forests are considered the “lungs of the earth”, phytoplankton is known for providing the same service in the ocean! They consume carbon dioxide, dissolved in the sunlit portion of the ocean, and produce about half of the world’s oxygen.
Want to learn more about how we study the ocean? Follow @NASAEarth on twitter.
Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com.
hiii !! as my bio says l was @disasterslut and l (against better judgement) deleted my blog!! it would mean a lot to me if anyone could reblog this so l can try and somewhat build my acc up again (or at least try to) sorry I’m a wreck and thank you so much 💓💓
Do you have any idea making money online?
I’ve been making a lot of money using an survey website. I’ve been doing it for a few months now and make $30-50 per day from doing their online surveys.
Here is the link for the one I use if you want to give it a try.
You can sign up for the site and you get a bonus just for signing up. I’ve been paid about 10 times from each so I know it’s not a scam. It’s easy and quick to sign up and it’s worth giving it a try.
You’ll be able to complete the surveys and redeem your points for paypal cash, a check, or giftcards. Good luck and have fun! I wish someone told me about this sooner :)
I’ve been using these both for a while and I take the surveys in my free time and make $200-$300 per week from it. It’s definitely worth the extra income in you have some free time to spend a few minutes on these. Definitely helps out so I can buy my makeup!
Buy access to my private blog or snap xxx Click here
*Do not delete my caption or i will block and report you. Reblogs are cooler than likes. *
Love isn’t soft, like those poets say. Love has teeth which bite and the wounds never close.
Stephen King, The Body. (via wordsnquotes)
Love isn’t soft, like those poets say. Love has teeth which bite and the wounds never close.
Stephen King, The Body. (via wordsnquotes)
That Twix campaign is a lie. I got one that had TWO RIGHT but halfway through I found I had one left.