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6 Tiny Satellites That Are Changing How We See Earth

HARP: Hyper-Angular Rainbow Polarimeter

What’s better than taking a picture of a cloud to figure out its size and shape? Taking a bunch of pictures all around it. That way you get a three-dimensional view without having to worry about missing something. The HARP CubeSat is going to do just that: make observations of cloud droplets and tiny airborne particles like soot and dust with a modified camera lens from multiple angles. This will give us a full rendering of what’s going on inside the clouds, specifically, how those airborne particles act as “seeds” for water vapor to condense on and form cloud droplets. Since so many of those particles are in the air as a result of man-made pollution, we want to understand how they may be affecting clouds, weather and climate.

RAVAN: Radiometer Assessment using Vertically Aligned Nanotubes

Anyone who’s worn a black shirt on a summer day knows how much sunlight and heat it absorbs. The RAVAN 3-unit CubeSat, however, carries “blacker than black” technology – carbon nanotubes set up like a bundle of drinking straws that suck up nearly all the sunlight and energy that reach them to the point that your black shirt seems merely dark grey in comparison. Flying in low Earth orbit, RAVAN’s super sensitive instrument will detect tiny changes in the amount of sunlight and energy passing into and out of the top of the atmosphere. The amount of energy passing through the top of the atmosphere is where the net accounting of Earth’s energy budget happens – one of the major measurements we need in order to understand the effects of greenhouse gases on global warming and climate change. 

MiRaTA: Microwave Radiometer Technology Acceleration

That long skinny piece coming out of the bottom right side under the solar panel? That’s a measuring tape. It’s doubling as a communications antenna on the MiRaTA CubeSat that will be a mini-weather station in space. This 3-unit, shoe box-sized satellite is testing out new, miniaturized technology to measure temperature, water vapor, and cloud ice in the atmosphere. They’ll be tracking major storms, including hurricanes, as well as everyday weather. If this test flight is successful, the new, smaller technology will likely be incorporated into major – large – weather satellite missions in the future that are part of our national infrastructure.

IceCube

The aptly named IceCube will measure – you guessed it – ice in our atmosphere. Unlike the droplets that make up rain, ice is one of the harder things to measure from space. IceCube is a 3-unit CubeSat about the size of a loaf of bread outfitted with a new high-frequency microwave radiometer, an instrument that measures naturally occurring radiation emitted by stuff in the atmosphere – cloud droplets, rain, and the ice particles at the tops of clouds. This will be the first space test of the new microwave radiometer that has to balance its tiny size and low power with being sensitive enough to detect cloud ice. 

CYGNSS: Cyclone, Global Navigation Satellite System

What do GPS signals do when they’re not talking to your phone? A lot of them are just bouncing harmlessly off the planet’s surface – a fact that the CYGNSS mission is taking advantage of to measure wind speed over the ocean. Eight identical small satellites, each about the size of a microwave oven, flying in formation carry custom modified GPS receivers pointed at the oceans. When the water is smooth – not windy – the GPS signals reflect back uniformly, like the moon on a pond reflected as if in a mirror. When the water is choppy – windy – the signals reflect back in in the same direction but distorted, like the moon reflection on a choppy pond being distorted by ripples. Flying eight satellites in formation means the CYGNSS mission can measure wind speed across more of the ocean at once, which will help with understanding tropical storms and hurricanes. 

TROPICS: Time-Resolved Observations of Precipitation structure and storm Intensity with a Constellation of Smallsats

An important way to improve forecasts of hurricane and tropical cyclone intensity is to see what’s going on inside and around them while they’re happening. That’s the goal of the TROPICS mission, 12 CubeSats that will fly in formation to track the temperature and humidity of storm environments. The TROPICS CubeSats will get very frequent measurements, similar to X-rays, that cut through the overall cloud-cover so we can see the storm’s underlying structure. The storm structures known as the eyewall – tall clouds, wind and rain around the eye – and rainbands – the rainy parts of the spiral arms – give us clues about whether a storm is primed to intensify into a category 4 or 5 storm, something everyone in their path needs to know.

Learn more the world of small satellites at: https://www.nasa.gov/mission_pages/smallsats

Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com

Nikola Tesla once paid an overdue hotel bill with a ‘working model’ of his 'death beam’. He warned the staff never to open it, describing it as a war-ending particle weapon that could stop invading armies and make warfare pointless. After his death in 1943, someone finally pried the box open and found nothing but a bunch of harmless old electrical components. Source

Biotronium series post-2

The weather suddenly changes.. 'Oh what the Heck, as usual the weather changes suddenly' That's what we say now.But a decade back when weather suddenly changes people say 'some thing is wrong' ..Now what's exactly happening ?.Scientist and theorists say its really something wrong...really wrong - Like a global wipe out ?!.

Green Ideas Can make the globe Green!

Get your green ideas into a new dimension!THe world needs You !people who have green ideas.. please break you restrictions and build it green, great companies and the government and thew world needs people with these ideas

BE A DIYer ! BE YOU!

TODAY IS WORLD POLLUTION PREVENTION DAY !

The internet of things IOT

Wifi evolve to LiFi 

post by worl of facts

Li-Fi Is The New Insanely Fast Wireless Internet

Wi-Fi has revolutionized the experience of connecting online, but it has already been one-upped. The radiowave technology may be soon replaced with Li-Fi, the wireless internet alternative that is 100 times faster than the Wi-Fi we use today. 

Keep reading

10 Times More Galaxies!

The universe suddenly looks a lot more crowded…

We already estimated that there were about 100 billion galaxies in the observable universe, but new research shows that this estimate is at least 10 times too low!

First, what is the observable universe? Well, it is the most distant part of the universe we can see from Earth because, in theory, the light from these objects have had time to reach Earth.

In a new study using surveys taken by the Hubble Space Telescope and other observatories, astronomers came to the surprising conclusion that there are at least 10 times more galaxies in the observable universe than previously thought. This places the universe’s estimated population at, minimally, 2 trillion galaxies!

The results have clear implications for galaxy formation, and also helps shed light on an ancient astronomical paradox – why is the sky dark at night?

Most of these newly discovered galaxies were relatively small and faint, with masses similar to those of the satellite galaxies surrounding the Milky Way.

Using deep-space images from the Hubble Space Telescope and other observatories, astronomers converted the images into 3-D, in order to make accurate measurements of the number of galaxies at different epochs in the universe’s history.

In addition, they used new mathematical models, which allowed them to infer the existence of galaxies that the current generation of telescopes cannot observe. This led to the surprising conclusion that in order for the numbers of galaxies we now see and their masses to add up, there must be a further 90% of galaxies in the observable universe that are too faint and too far away to be seen with present-day telescopes.

The myriad small faint galaxies from the early universe merged over time into the larger galaxies we can now observe.

That means that over 90% of the galaxies in the universe have yet to be studied! In the near future, the James Webb Space Telescope will be able to study these ultra-faint galaxies and give us more information about their existence.

So back to the question…Why is the sky dark at night if the universe contains an infinity of stars? Researchers came to the conclusion that indeed there actually is such an abundance of galaxies that, in principle, every patch in the sky contains part of a galaxy.

However, starlight from the galaxies is invisible to the human eye and most modern telescopes due to other known factors that reduce visible and ultraviolet light in the universe. Those factors are the reddening of light due to the expansion of space, the universe’s dynamic nature, and the absorption of light by intergalactic dust and gas. All combined, this keeps the night sky dark to our vision.

Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com

Well,well NASA just go and find some alien friends....(post by sci universe)

Well this is a bummer, but a good call considering how media is like 😄 NASA will host a teleconference at 2 p.m. EDT Monday, Sept. 26, to present new “surprising evidence” of activity from images captured by the Hubble Space Telescope. 

Europa is thought to host an ocean of liquid water beneath its icy surface, and is thus considered to be one of the best places to search for alien life elsewhere in the Solar System. 

If you want to know more about Europa, I recommend this infographic by space.com.

Pirates didn’t make their captives walk the plank. Though big fans of torture methods like flogging and marooning, there are no actual records of pirates using a plank. The first mention of plank walking was in a 1724 fictional novel by author Daniel Defoe, but if real-life pirates wanted to drown someone, they probably just threw them off the boat. Source Source 2

Comet outbursts

Although European Space Agency’s comet-landing mission Rosetta ended on 30 September, the data gathered through it will keep teaching us about comets for a while. 

Here are images taken by the Rosetta spacecraft’s camera when Comet 67P/Churyumov–Gerasimenko approached closest to the Sun in August. The comet became very active and outbursts occurred, a typical one thought to release 60–260 tonnes of material in just few minutes! 

The outburst can be divided into three categories based on how their dust flow looks like, and the outbursts occurred both when the Sun had started to warm up the previously shaded surface, and after illumination of a few hours. [1] So the outbursts could happen in at least two different ways.

Anyhow, they provide scientists insights of cometary lives and they look pretty cool. 

1. Summer fireworks on Rosetta’s comet.  23 September 2016

Copyright: OSIRIS: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM /DASP/IDA; NavCam: ESA/Rosetta/NavCam – CC BY-SA IGO 3.0