Category: science

[Updated!] First Product from NASA Fanboy: Ast…

[Updated!] First Product from NASA Fanboy: Astro art prints!:

Updated: I’ve struck a better deal for the printing process and am thrilled to offer a drastically reduced price on this 24"x36" print! I’ve been wanting to do this for quite some time, and am thrilled to finally introduce the first canvas print from Keep Looking Up. I’m working with some incredible craftsmen to create this limited edition run of 24"x36" canvas prints of the iconic Earthrise image from the Apollo 8 mission. I’m looking forward to offering more images in the future and having a full site dedicated to the prints. Check it out, and Keep Looking Up!

[Updated!] First Product from NASA Fanboy: Ast…

[Updated!] First Product from NASA Fanboy: Astro art prints!:

Updated: I’ve struck a better deal for the printing process and am thrilled to offer a drastically reduced price on this 24"x36" print! I’ve been wanting to do this for quite some time, and am thrilled to finally introduce the first canvas print from Keep Looking Up. I’m working with some incredible craftsmen to create this limited edition run of 24"x36" canvas prints of the iconic Earthrise image from the Apollo 8 mission. I’m looking forward to offering more images in the future and having a full site dedicated to the prints. Check it out, and Keep Looking Up!

[Updated!] First Product from NASA Fanboy: Ast…

[Updated!] First Product from NASA Fanboy: Astro art prints!:

Updated: I’ve struck a better deal for the printing process and am thrilled to offer a drastically reduced price on this 24"x36" print! I’ve been wanting to do this for quite some time, and am thrilled to finally introduce the first canvas print from Keep Looking Up. I’m working with some incredible craftsmen to create this limited edition run of 24"x36" canvas prints of the iconic Earthrise image from the Apollo 8 mission. I’m looking forward to offering more images in the future and having a full site dedicated to the prints. Check it out, and Keep Looking Up!

Land is Sliding, Tell Us Where!

Summer in
the northern hemisphere brings monsoon season, causing heavy
rains and flooding that trigger landslides. Next time you see a landslide in
the news, online, or in your neighborhood, submit it to our citizen science
project Landslide
Reporter
to build the largest open global landslide catalog and help
us and the public learn more about when and where they occur.

Rainfall is the most common cause
of landslides.

After a storm, the soil and rock on a slope can become saturated with water and
begin to slide downwards, posing a danger to people and destroying roads,
houses and access to electricity and water supplies.

image

We have been monitoring rainfall from
space for
decades
.

Orbiting
the Earth right now, the Global Precipitation Measurement (GPM)
mission is a group of 10 satellites that measure rain, snow, sleet and other
precipitation worldwide every three hours. This data tells us where and when heavy
rain is falling and if it could lead to disasters.

image

What can rainfall data tell us
about landslides?

We’re
using GPM data to understand where and when landslides are happening. A global
landslide model
uses information about the environment and rainfall
to anticipate where landslides are likely to happen anytime around the world
every three hours.

image

To improve the global
landslide model
and other landslide research, NASA is looking for
citizen scientists like you!

If you find a landslide reported online or in your neighborhood, you can provide
the event details in Landslide Reporter, our citizen
science project.

image

Your
detailed reports are added into an open global landslide inventory
available at Landslide Viewer. We use
citizen science contributions along with other landslide data to check our prediction
model so we can have a better picture of how rainfall, slope steepness, forest
cover, and geology can trigger a landslide.

image

Because the data is open, anyone
can use the data for research or response
.

When you report a landslide, you improve our
collection of landslide data for everyone.

Help
support landslide efforts worldwide by contributing to Landslide
Reporter
, and you can help inform decisions that could save lives
and property today! Learn more about the project at https://landslides.nasa.gov. You
can also follow the project on Twitter and Facebook.

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

[Updated!] First Product from NASA Fanboy: Ast…

[Updated!] First Product from NASA Fanboy: Astro art prints!:

Updated: I’ve struck a better deal for the printing process and am thrilled to offer a drastically reduced price on this 24"x36" print! I’ve been wanting to do this for quite some time, and am thrilled to finally introduce the first canvas print from Keep Looking Up. I’m working with some incredible craftsmen to create this limited edition run of 24"x36" canvas prints of the iconic Earthrise image from the Apollo 8 mission. I’m looking forward to offering more images in the future and having a full site dedicated to the prints. Check it out, and Keep Looking Up!

[Updated!] First Product from NASA Fanboy: Ast…

[Updated!] First Product from NASA Fanboy: Astro art prints!:

Updated: I’ve struck a better deal for the printing process and am thrilled to offer a drastically reduced price on this 24"x36" print! I’ve been wanting to do this for quite some time, and am thrilled to finally introduce the first canvas print from Keep Looking Up. I’m working with some incredible craftsmen to create this limited edition run of 24"x36" canvas prints of the iconic Earthrise image from the Apollo 8 mission. I’m looking forward to offering more images in the future and having a full site dedicated to the prints. Check it out, and Keep Looking Up!

Isolation, Hazard of the Mind

Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com.A human journey to Mars, at first glance, offers an inexhaustible amount of complexities. To bring a mission to the Red Planet from fiction to fact, our Human Research Program has organized hazards astronauts will encounter on a continual basis into five classifications. (View the first hazard). Let’s dive into the second hazard:

image

Overcoming the second hazard, isolation and confinement, is essential for a successful mission to Mars. Behavioral issues among groups of people crammed in a small space over a long period of time, no matter how well trained they are, are inevitable. It is a topic of study and discussion currently taking place around the selection and composition of crews.

image

On Earth, we have the luxury of picking up our cell phones and instantly being connected with nearly everything and everyone around us. 

image

On a trip to Mars, astronauts will be more isolated and confined than we can imagine. 

image

Sleep loss, circadian desynchronization (getting out of sync), and work overload compound this issue and may lead to performance decrements or decline, adverse health outcomes, and compromised mission objectives.

image

To address this hazard, methods for monitoring behavioral health and adapting/refining various tools and technologies for use in the spaceflight environment are being developed to detect and treat early risk factors. Research is also being conducted in workload and performance, light therapy for circadian alignment or internal clock alignment, and team cohesion.

image

Exploration to the Moon and Mars will expose astronauts to five known hazards of spaceflight, including isolation and confinement. To learn more, and find out what the Human Research Program is doing to protect humans in space, check out the “Hazards of Human Spaceflight” website. Or, check out this week’s episode of “Houston We Have a Podcast,” in which host Gary Jordan further dives into the threat of isolation and confinement with Tom Williams, a NASA Human Factors and Behavior Performance Element Scientist at the Johnson Space Center. 

image

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

Solar System 10 Things: Spitzer Space Telescop…

Our Spitzer Space Telescope is celebrating 15 years since its launch on August 25, 2003. This remarkable spacecraft has made discoveries its designers never even imagined, including some of the seven Earth-size planets of TRAPPIST-1. Here are some key facts about Spitzer:

1. Spitzer is one of our Great Observatories.

Our Great Observatory Program aimed to explore the universe with four large space telescopes, each specialized in viewing the universe in different wavelengths of light. The other Great Observatories are our Hubble Space Telescope, Chandra X-Ray Observatory, and Compton Gamma-Ray Observatory. By combining data from different kinds of telescopes, scientists can paint a fuller picture of our universe.

2. Spitzer operates in infrared light.

Infrared wavelengths of light, which primarily come from heat radiation, are too long to be seen with human eyes, but are important for exploring space — especially when it comes to getting information about something extremely far away. From turbulent clouds where stars are born to small asteroids close to Earth’s orbit, a wide range of phenomena can be studied in infrared light. Objects too faint or distant for optical telescopes to detect, hidden by dense clouds of space dust, can often be seen with Spitzer. In this way, Spitzer acts as an extension of human vision to explore the universe, near and far.

What’s more, Spitzer doesn’t have to contend with Earth’s atmosphere, daily temperature variations or day-night cycles, unlike ground-based telescopes. With a mirror less than 1 meter in diameter, Spitzer in space is more sensitive than even a 10-meter-diameter telescope on Earth.

3. Spitzer was the first spacecraft to fly in an Earth-trailing orbit.

Rather than circling Earth, as Hubble does, Spitzer orbits the Sun on almost the same path as Earth. But Spitzer moves slower than Earth, so the spacecraft drifts farther away from our planet each year.

This “Earth-trailing orbit” has many advantages. Being farther from Earth than a satellite, it receives less heat from our planet and enjoys a naturally cooler environment. Spitzer also benefits from a wider view of the sky by orbiting the Sun. While its field of view changes throughout the year, at any given time it can see about one-third of the sky. Our Kepler space telescope, famous for finding thousands of exoplanets – planets outside our solar system – also settled in an Earth-trailing orbit six years after Spitzer.

4. Spitzer began in a “cold mission.”

Spitzer has far outlived its initial requirement of 2.5 years. The Spitzer team calls the first 5.5 years “the cold mission” because the spacecraft’s instruments were deliberately cooled down during that time. Liquid helium coolant kept Spitzer’s instruments just a few degrees above absolute zero (which is minus 459 degrees Fahrenheit, or minus 273 degrees Celsius) in this first part of the mission.

5. The “warm mission” was still pretty cold.

Spitzer entered what was called the “warm mission” when the 360 liters of liquid helium coolant that was chilling its instruments ran out in May 2009.

At the “warm” temperature of minus 405 Fahrenheit, two of Spitzer’s instruments – the Infrared Spectrograph (IRS) and Multiband Imaging Photometer (MIPS) – stopped working. But two of the four detector arrays in the Infrared Array Camera (IRAC) persisted. These “channels” of the camera have driven Spitzer’s explorations since then.

6. Spitzer wasn’t designed to study exoplanets, but made huge strides in this area.

Exoplanet science was in its infancy in 2003 when Spitzer launched, so the mission’s first scientists and engineers had no idea it could observe planets beyond our solar system. But the telescope’s accurate star-targeting system and the ability to control unwanted changes in temperature have made it a useful tool for studying exoplanets. During the Spitzer mission, engineers have learned how to control the spacecraft’s pointing more precisely to find and characterize exoplanets, too.

Using what’s called the “transit method,” Spitzer can stare at a star and detect periodic dips in brightness that happen when a planet crosses a star’s face. In one of its most remarkable achievements, Spitzer discovered three of the TRAPPIST-1 planets and confirmed that the system has seven Earth-sized planets orbiting an ultra-cool dwarf star. Spitzer data also helped scientists determine that all seven planets are rocky, and made these the best-understood exoplanets to date.

Spitzer can also use a technique called microlensing to find planets closer to the center of our galaxy. When a star passes in front of another star, the gravity of the first star can act as a lens, making the light from the more distant star appear brighter. Scientists are using microlensing to look for a blip in that brightening, which could mean that the foreground star has a planet orbiting it. Microlensing could not have been done early in the mission when Spitzer was closer to Earth, but now that the spacecraft is farther away, it has a better chance of measuring these events.

7. Spitzer is a window into the distant past.

The spacecraft has observed and helped discover some of the most distant objects in the universe, helping scientists understand where we came from. Originally, Spitzer’s camera designers had hoped the spacecraft would detect galaxies about 12 billion light-years away. In fact, Spitzer has surpassed that, and can see even farther back in time – almost to the beginning of the universe. In collaboration with Hubble, Spitzer helped characterize the galaxy GN-z11 about 13.4 billion light-years away, whose light has been traveling since 400 million years after the big bang. It is the farthest galaxy known.

8. Spitzer discovered Saturn’s largest ring.

Everyone knows Saturn has distinctive rings, but did you know its largest ring was only discovered in 2009, thanks to Spitzer? Because this outer ring doesn’t reflect much visible light, Earth-based telescopes would have a hard time seeing it. But Spitzer saw the infrared glow from the cool dust in the ring. It begins 3.7 million miles (6 million kilometers) from Saturn and extends about 7.4 million miles (12 million kilometers) beyond that.

9. The “Beyond Phase” pushes Spitzer to new limits.

In 2016, Spitzer entered its “Beyond phase,” with a name reflecting how the spacecraft operates beyond its original scope.

As Spitzer floats away from Earth, its increasing distance presents communication challenges. Engineers must point Spitzer’s antenna at higher angles toward the Sun in order to talk to our planet, which exposes the spacecraft to more heat. At the same time, the spacecraft’s solar panels receive less sunlight because they point away from the Sun, putting more stress on the battery.

The team decided to override some autonomous safety systems so Spitzer could continue to operate in this riskier mode. But so far, the Beyond phase is going smoothly.

10. Spitzer paves the way for future infrared telescopes.

Spitzer has identified areas of further study for our upcoming James Webb Space Telescope, planned to launch in 2021. Webb will also explore the universe in infrared light, picking up where Spitzer eventually will leave off. With its enhanced ability to probe planetary atmospheres, Webb may reveal striking new details about exoplanets that Spitzer found. Distant galaxies unveiled by Spitzer together with other telescopes will also be observed in further detail by Webb. The space telescope we are planning after that, WFIRST, will also investigate long-standing mysteries by looking at infrared light. Scientists planning studies with future infrared telescopes will naturally build upon the pioneering legacy of Spitzer.

Read the web version of this week’s “Solar System: 10 Things to Know” article HERE

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

[Updated!] First Product from NASA Fanboy: Ast…

[Updated!] First Product from NASA Fanboy: Astro art prints!:

Updated: I’ve struck a better deal for the printing process and am thrilled to offer a drastically reduced price on this 24"x36" print! I’ve been wanting to do this for quite some time, and am thrilled to finally introduce the first canvas print from Keep Looking Up. I’m working with some incredible craftsmen to create this limited edition run of 24"x36" canvas prints of the iconic Earthrise image from the Apollo 8 mission. I’m looking forward to offering more images in the future and having a full site dedicated to the prints. Check it out, and Keep Looking Up!

[Updated!] First Product from NASA Fanboy: Ast…

[Updated!] First Product from NASA Fanboy: Astro art prints!:

Updated: I’ve struck a better deal for the printing process and am thrilled to offer a drastically reduced price on this 24"x36" print! I’ve been wanting to do this for quite some time, and am thrilled to finally introduce the first canvas print from Keep Looking Up. I’m working with some incredible craftsmen to create this limited edition run of 24"x36" canvas prints of the iconic Earthrise image from the Apollo 8 mission. I’m looking forward to offering more images in the future and having a full site dedicated to the prints. Check it out, and Keep Looking Up!