Just 6% Of Americans Got A Perfect Score. Will You?

Solar System: Things to Know  This Week

This week, we’re looking at MAVEN’s exploration of Mars, the Orionid meteor showers, Mercury’s “great valley” and more.

1. Celebrating MAVEN

MAVEN, the Mars Atmospheric and Volatile Evolution, was the second mission selected for our Mars Scout program and the first to explore the planet’s upper atmosphere . It launched on November 18, 2013 and entered orbit around Mars on September 21, 2014. 

+ MAVEN Quick Facts

2. Jupiter Moon Dance

This time-lapse sequence of Hubble Space Telescope images shows Jupiter’s moon Europa as it moved across the planet’s face over the course of 19 minutes. Europa is at the bottom center on Jupiter’s disk, the Great Red Spot to the left and Europa’s shadow to its right. The video was created by combining six snapshots taken in ultraviolet light with Hubble’s Wide Field Camera 3.

+ Learn more

3. The Orionid Meteor Shower

Orionid shower peaks November 28. Look for the constellation Orion in the Southeast sky by 9 p.m. Using binoculars, look for the Orion Nebula. 

4. Comet Warming Up!! 

Comet 45P/Honda-Mrkos-Pajdu áková will brighten to expected stunning binocular visibility in mid to late December, but is near Venus on November 23rd.

+ Track the Comet

5. Mercury’s “Great Valley”

A newly discovered “great valley” in the southern hemisphere of Mercury provides more evidence that the planet closest to the sun is shrinking. Using stereo images from our MESSENGER spacecraft to create a high-resolution map, scientists have discovered that revealed the broad valley – more than 620 miles (1,000 kilometers) long – extending into the Rembrandt basin, one of the largest and youngest impact basins on Mercury. About 250 miles (400 kilometers) wide and 2 miles (3 kilometers) deep, Mercury’s great valley is smaller than Mars’ Valles Marineris, but larger than North America’s Grand Canyon and wider and deeper than the Great Rift Valley in East Africa.

+ Learn more

Discover the full list of 10 things to know about our solar system this week HERE.

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

The amateur geneticist who surprised science (long read)

Kim Goodsell has two rare diseases. Doctors blamed coincidence, but was it? She taught herself genetics to find out, and discovered something remarkable

Kim Goodsell was running along a mountain trail when her left ankle began turning inward, unbidden. A few weeks later she started having trouble lifting her feet properly near the end of her runs, and her toes would scuff the ground. Her back started to ache, and then her joints too.

This was in 2002, and Kim, then 44 years old, was already an accomplished endurance athlete. She cycled, ran, climbed and skied through the Rockies for hours every day, and was a veteran of Ironman triathlons. She’d always been the strong one in her family. When she was four, she would let her teenage uncles stand on her stomach as a party trick. In high school, she was an accomplished gymnast and an ardent cyclist. By college, she was running the equivalent of a half marathon on most days. It wasn’t that she was much of a competitor, exactly – passing someone in a race felt more deflating than energising. Mostly Kim just wanted to be moving.

So when her limbs started glitching, she did what high-level athletes do, what she had always done: she pushed through. But in the summer of 2010, years of gradually worsening symptoms gave way to weeks of spectacular collapse. Kim was about to head to Lake Superior with her husband. They planned to camp, kayak, and disappear from the world for as long as they could catch enough fish to eat. But in the days before their scheduled departure, she could not grip a pen or a fork, much less a paddle. Instead of a lakeside tent, she found herself at the Mayo Clinic in Rochester, Minnesota.

Continue Reading.

Questioning the reliability of research

This year, one of the top five most talked-about research studies was on the reliability of research findings.

The Reproducibility Project is a vast, multi-institution effort aimed to measure how often researchers could replicate psychology experiments and yield the same result. For the project, 270 academics, including researchers at UC Riverside, UC San Francisco and UC Davis, attempted to replicate the findings from 100 recently published psychology experiments.

They failed twice as often as they succeeded; in fact, only 36 percent of the replicated studies yielded results consistent with earlier findings.

That doesn’t necessarily indicate the original research wasn’t accurate or reliable, researchers say. Many factors, including a lack of detail into methodology, can influence replicability. But the report — published in August in the journal Science  — does highlight the challenge of producing reliable findings and suggests that more could be done to enable replicatable results.

Read the other research stories that got the world buzzing in 2015 →

Changing Moods with Sleep and Light

Pregnant with her first child, Monica Bryan noticed changes in her mood and energy levels. That’s when she heard about a UC San Diego School of Medicine clinical study aimed at using sleep and light therapies instead of medication to treat premenstrual, pregnancy, postpartum and menopausal depression.

Barbara Parry, MD, professor of psychiatry at UC San Diego School of Medicine, says the mood changes a woman undergoes before menstruation and during pregnancy, postpartum and menopause may result from the effect of a hormonal change on circadian rhythms. These circadian rhythm changes are akin to what occurs in jet lag when sleep and hormonal changes become “out of synch” with each other.

“The circadian rhythms of people who suffer from depression are off balance,” said Parry. “In women who develop depression during pregnancy, for example, melatonin, the hormone that anticipates the arrival of nighttime, is secreted earlier, and sleep onset occurs later, affecting the perceived quality of sleep.”

These disturbances in the body’s circadian rhythms can be triggered by changes in reproductive hormones that occur during the menstrual cycle, the peripartum period and menopause, resulting in an increased vulnerability to mood disorders. The noninvasive trial uses sleep and light therapy as a way to correct these biological rhythm disturbances, and thereby, improve mood. The trial is open to women with and without depressive symptoms related to the reproductive cycle, and compensation is available.

For two weeks, Bryan completed daily and weekly mood ratings and weekly clinic visits as part of the evaluation period. This study phase was followed by monitoring of her melatonin levels at home. Her activity levels were recorded via a wrist-mounted fitness band that measures activity and light exposure to assess the relationship between melatonin and activity and rest cycles.

After all baseline information was gathered, Bryan began the one-week intervention phase, which included one night of altered and shortened sleep cycle followed by light therapy. During this time the fitness band continued to record sleep, activity and light exposure.

Participation in the trial didn’t require much effort, said Bryan. She kept a daily log of her mood ratings and how much time she spent indoors and outdoors. Beyond that, the only added requirement was spending one hour after waking sitting in front of a light box.

“I spent the hour watching television, reading or catching up on what I missed the day before on my phone,” said Bryan. “There was no problem taking a little bit of time for myself in the mornings.”

Read more here For more information about the sleep and light therapy clinical trials, please call 619-543-7393

Following cancer with tiny magnets

Life-saving surgery and treatments rely on doctors being able to accurately track the spread of cancers.                                

A new device that uses iron particles and a magnetic probe will allow clinicians to narrow down exactly which lymph nodes tumours spread to.

Developed by Aidan Cousins with colleagues at the University of South Australia, the novel approach is more sensitive and safer than existing methods for monitoring cancer.

“Pre-clinical trials of our approach suggest it gives a very clear picture of where tumours are most likely to spread,” Aidan explained.

“It will allow subsequent surgery and treatment options to be refined for better standards of care and improved prognosis.”

The technique involves injecting biodegradable iron particles at the primary site of a tumour, from where – as part of their normal surveillance activities – cells of the immune system transport them to the draining lymph nodes.

More information: A. Cousins et al. Novel Handheld Magnetometer Probe Based on Magnetic Tunnelling Junction Sensors for Intraoperative Sentinel Lymph Node Identification, Scientific Reports (2015). DOI: 10.1038/srep10842        

Electron microscopic image of a single human lymphocyte. Credit: Dr. Triche National Cancer Institute                                  

Solar System: From TED Talks to Data Releases

Let us lead you on a journey of our solar system. Here are some things to know this week:

1. NASA-Funded Research

It’s all just a click way with the launch of a new public access site, which reflects our ongoing commitment to provide public access to science data.

Start Exploring!

2.  Red Planet Reconnaissance 

One of the top places in our solar system to look for signs of past or current life is Mars. Through our robotic missions, we have been on and around Mars for 40 years. These orbiters, landers and rovers are paving the way for human exploration.

Meet the Mars robots

3. Three Moons and a Planet that Could Have Alien Life

In a presentation at TED Talks Live, our director of planetary science, Jim Green, discusses the best places to look for alien life in our solar system.

Watch the talk

4. Setting Free a Dragon

Tune in to NASA TV on Friday, Aug. 26 at 5:45 a.m. EDT for coverage of the release of the SpaceX Dragon CRS-9 cargo ship from the International Space Station.

Watch live

5. Anniversary Ring(s)

Aug. 26 marks 35 years since Voyager probe flew by Saturn, delighting scientists with rich data and images. Today, thanks to our Cassini spacecraft, we know much more about the ringed planet.

Learn more about Cassini’s mission to Saturn

Learn more about Voyager 2

Discover the full list of 10 things to know about our solar system this week HERE.

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

I never take selfies let alone smiling selfies and I’m hardly ever happy. Lemme see if this actually works

NASA Suspends Next Mission to Mars

ASA will not launch its InSight spacecraft to Mars in March as originally planned, because of a leak in a French-built seismometer that is the spacecraft’s primary scientific instrument.

Technicians at CNES, the French space agency, have worked for months to repair a leak in a vacuum seal on the seismometer. OnDecember 22, NASA announced that it would suspend the launch. The delay means that InSight will not go off in 2016, but will have to wait 26 months until the Earth-Mars orbital geometry is once again favourable for launching a mission to the red planet.

InSight’s goal is to probe the structure of the Martian interior by listening to how marsquakes ring through the planet. The mission was designed to determine the size, composition and state of the planet’s core, mantle and crust, which no previous Mars mission has done.

Read more ~ Scientific American

Image: Flaws in the seismometers (at left, in the container on the ground) for NASA’s next Mars lander, InSight, will delay the mission’s launch by at least two years.    Credit: NASA/JPL-Caltech

NASA’s FireSat system will be able to detect wildfires from space

A Salute to Sistas in Space

(From top to bottom and the order in which they went into space)

Dr. Mae C. Jemison

Stephanie D. Wilson

Joan Higginbotham

Dr. Yvonne Cagle

Jeanette J. Epps

Source: 5 Black Female Astronauts You Should Know