Eric Hovind 5, Episode I

NASA test-fires booster for the Space Launch System (SLS) that will carry crew & cargo for the Mission to Mars! Take THAT, conspiracy theorists and flat-earthers!

How Exactly Do We Plan to Bring an Asteroid Sample Back to Earth?

Our OSIRIS-REx spacecraft launches today, and will travel to a near-Earth asteroid, called Bennu. While there, it will collect a sample to bring back to Earth for study. But how exactly do we plan to get this spacecraft there and bring the sample back?

Here’s the plan:

After launch, OSIRIS-REx will orbit the sun for a year, then use Earth’s gravitational field to assist it on its way to Bennu. In August 2018, the spacecraft’s approach to Bennu will begin.

The spacecraft will begin a detailed survey of Bennu two months after slowing to encounter the asteroid. The process will last over a year, and will include mapping of potential sample sites. After the selection of the final site, the spacecraft will briefly touch the surface of Bennu to retrieve a sample.

To collect a sample, the sampling arm will make contact with the surface of Bennu for about five seconds, during which it will release a burst of nitrogen gas. The procedure will cause rocks and surface material to be stirred up and captured in the sampler head. The spacecraft has enough nitrogen to allow three sampling attempts, to collect between 60 and 2000 grams (2-70 ounces).

In March 2021, the window for departure from the asteroid will open, and OSIRIS-REx will begin its return journey to Earth, arriving two and a half years later in September 2023.

The sample return capsule will separate from the spacecraft and enter the Earth’s atmosphere. The capsule containing the sample will be collected at the Utah Test and Training Range.

For two years after the sample return, the science team will catalog the sample and conduct analysis. We will also preserve at least 75% of the sample for further research by scientists worldwide, including future generations of scientists.

The Spacecraft

The OSIRIS-REx spacecraft is outfitted with some amazing instruments that will help complete the mission. Here’s a quick rundown:

The OCAMS Instrument Suite

PolyCam (center), MapCam (left) and SamCam (right) make up the camera suite on the spacecraft. These instruments are responsible for most of the visible light images that will be taken by the spacecraft.

OSIRIS-REx Laser Altimeter (OLA)

This instrument will provide a 3-D map of asteroid Bennu’s shape, which will allow scientists to understand the context of the asteroid’s geography and the sample location.

OSIRIS-REx Thermal Emission Spectrometer (OTES)

The OTES instrument will conduct surveys to map mineral and chemical abundances and will take the asteroid Bennu’s temperature.

OSIRIS-REx Visible and Infrared Spectrometer (OVIRS)

This instrument will measure visible and near infrared light from the asteroid. These observations could be used to identify water and organic materials.

Regolith X-Ray Imaging Spectrometer (REXIS)

REXIS can image X-ray emission from Bennu in order to provide an elemental abundance map of the asteroid’s surface.

Touch-and-Go Sample Arm Mechanism (TAGSAM)

This part of the spacecraft will be responsible for collecting a sample from Bennu’s surface.

Watch Launch and More!

OSIRIS-REx Talk Wednesday, Sept. 7 at noon EDT Join us for a discussion with representatives from the mission’s science and engineering teams. This talk will include an overview of the spacecraft and the science behind the mission.  Social media followers can ask questions during this event by using #askNASA. Watch HERE. 

Uncovering the Secrets of Asteroids Wednesday, Sept. 7 at 1 p.m. EDT During this panel, our scientists will discuss asteroids, how they relate to the origins of our solar system and the search for life beyond Earth. Social media followers can ask questions during this event by using #askNASA. Watch HERE. 

LAUNCH COVERAGE!

Thursday, Sept. 8 starting at 4:30 p.m. EDT Watch the liftoff of the United Launch Alliance’s (ULA) Atlas V rocket from Kennedy Space Center in Florida at 7:05 p.m.  Full coverage is available online starting at 4:30 p.m. Watch HERE.  We will also stream the liftoff on Facebook Live starting at 6:45 p.m. EDT. Watch HERE. 

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

Science Denier Hall of Shame Rep to Attend Launch

FOR IMMEDIATE RELEASE A representative of Science Denier Hall of Shame/Science Strike Force will be attending a NASA Social event for the launch of Orbital ATK Antares Rocket at NASA’s Wallops Flight Facility in Virginia.

“NASA commercial cargo provider Orbital ATK is scheduled to launch its sixth mission to the International Space Station at 9:13 p.m. EDT Thursday, Oct. 13.”

– NASA (More…

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Juno Spacecraft Achieves Orbit of Jupiter

Juno Spacecraft Achieves Orbit of Jupiter

The Juno spacecraft, which left Earth in 2011, is now safely in orbit around Jupiter!

The orbit insertion marks the third and fourth time Juno’s on-board engine was used in space. The first two times occurred during its long flight to adjust its trajectory. This last two burns, at a little over 30 minutes each, slowed the craft just enough to be snagged by the gravity of Jupiter. (more…)

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http://www.youtube.com/watch?feature=player_embedded&v=U-y7GpBvU38

07/18/2016: Successful SpaceX Falcon 9 Rocket Launch & First Stage Recovery

Early this morning, a SpaceX Falcon 9 rocket successfully blasted off from Cape Canaveral, Florida, carrying nearly 5,000 pounds of cargo to the International Space Station.

Our friend Deverick Wimbush, quite the fan of science, is TRYING to debunk a Flat Earth nutter, but meeting with only dishonesty and evasiveness. Apparently, he's had about enough of it. (Some strong language)

Watch as NASA Test-Fires the RS-25 Rocket Engine

NASA test-fired an RS-25 rocket engine today, 08/18/2016 at the Stennis Space Center in Bay St. Louis in Mississippi. The RS-25 is one of four modified space shuttle main engines that will help lift the huge SLS rocket off the ground assisted by two solid rocket boosters.* The RS-25 engines are fueled by liquid oxygen and liquid hydrogen. Combined, the four RS-25 engines on SLS will generate 2…

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Ken Ham the Anti Science Sham: Ark Encounter

Well, it’s time to take a look at Ken Ham’s Ark Encounter. After the video, we’ll elaborate on a few of the details. Ken’s Claims: Built from the specs taken directly out of the bible.  Mr. Ham usually fails to mention that the bible was pretty light on specs. The only information given is the following: Make thee an ark of gopher…

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Eric Hovind 5 Part IV: Abstract Thinking In this video, we analyze Eric's thoughtful equation 'Confusion, Confusion, Confusion, THEREFORE God'

Pi Guides the Way

It may be irrational but pi plays an important role in the everyday work of scientists at NASA. 

What Is Pi ?

Pi is the ratio of a circle’s circumference to its diameter. It is also an irrational number, meaning its decimal representation never ends and it never repeats. Pi has been calculated to more than one trillion digits, 

Why March 14?

March 14 marks the yearly celebration of the mathematical constant pi. More than just a number for mathematicians, pi has all sorts of applications in the real world, including on our missions. And as a holiday that encourages more than a little creativity – whether it’s making pi-themed pies or reciting from memory as many of the never-ending decimals of pi as possible (the record is 70,030 digits).

While 3.14 is often a precise enough approximation, hence the celebration occurring on March 14, or 3/14 (when written in standard U.S.  month/day format), the first known celebration occurred in 1988, and in 2009, the U.S. House of Representatives passed a resolution designating March 14 as Pi Day and encouraging teachers and students to celebrate the day with activities that teach students about pi.

5 Ways We Use Pi at NASA

Below are some ways scientists and engineers used pi.

Keeping Spacecraft Chugging Along

Propulsion engineers use pi to determine the volume and surface area of propellant tanks. It’s how they size tanks and determine liquid propellant volume to keep spacecraft going and making new discoveries. 

Getting New Perspectives on Saturn

A technique called pi transfer uses the gravity of Titan’s moon, Titan, to alter the orbit of the Cassini spacecraft so it can obtain different perspectives of the ringed planet.

Learning the Composition of Asteroids

Using pi and the asteroid’s mass, scientists can calculate the density of an asteroid and learn what it’s made of–ice, iron, rock, etc.

Measuring Craters

knowing the circumference, diameter and surface area of a crater can tell scientists a lot about the asteroid or meteor that may have carved it out.

Determining the Size of Exoplanets

Exoplanets are planets that orbit suns other than our own and scientists use pi to search for them. The first step is determining how much the light curve of a planet’s sun dims when a suspected planets passes in front of it.

Want to learn more about Pi? Visit us on Pinterest at: https://www.pinterest.com/nasa/pi-day/