Archive for the ‘Astronomy & Space’ Category
Comet Lovejoy grazes the sun!
By John Ohab December 22nd, 2011 at 3:38 pm | Comment
In this video from the U.S Naval Research Laboratory (NRL), Comet Lovejoy takes a death-defying journey through several-million degree solar corona as it passes the Sun on December 15th, 2011 (EST). The comet defied the expectations of many experts by not only surviving its solar plunge but re-emerging as strong and bright as before.
“It’s absolutely astounding,” says Karl Battams, computational scientist at NRL. “I did not think the comet’s icy core was big enough to survive plunging through the several million degree solar corona for close to an hour, but Comet Lovejoy is still with us.”

Comet Lovejoy zooms toward the sun. This is the SECCHI COR-1 (inner coronagraph) image on the STEREO-B satellite. (Image: STEREO/SECCHI image courtesy NASA/NRL)
The imagery used for this video was gathered from NRL’s Sun-Earth Connection Coronal and Heliospheric Investigation (SECCHI)/EUVI-A instruments, which are a part of the NASA Solar Terrestrial RElations Observatory (STEREO) mission. STEREO consists of two space-based observatories – one ahead of Earth in its orbit, the other trailing behind. With this new pair of viewpoints, scientists are able to see the structure and evolution of solar storms as they blast from the Sun and move out through space.
Why am I telling you all of this? Well, Comet Lovejoy was discovered on Dec. 2, 2011, by a citizen scientist — Terry Lovejoy of Australia. As it turns out, it’s not all that uncommon for comets to be discovered by citizen scientists from the public. For years, NRL’s Sungrazing Comets Project has asked people to help discover new comets.
You can discover the next comet…from your couch!
By John Ohab October 18th, 2011 at 5:39 pm | Comment
This blog post was originally published in the Fall 2011 edition of the U.S. Naval Research Laboratory’s Spectra.
In December 2010, as people on Earth celebrated the holidays and prepared to ring in the New Year, a European Space Agency (ESA)/NASA spacecraft quietly reached its own milestone: on December 26, the Solar and Heliospheric Observatory (SOHO) discovered its 2000th comet.
Drawing on help from citizen scientists around the world, SOHO has become the single greatest comet finder of all time. This is all the more impressive since SOHO was not designed to find comets, but to monitor the Sun.
“Since it launched on December 2, 1995, to observe the Sun, SOHO has more than doubled the number of comets for which orbits have been determined over the last three hundred years,” says Joe Gurman, the U.S. project scientist for SOHO at NASA’s Goddard Space Flight Center in Greenbelt, Maryland.
Of course, it is not SOHO itself that discovers the comets — that is the province of the dozens of amateur astronomer volunteers who daily pore over the images produced by SOHO’s LASCO (or Large Angle and Spectrometric Coronagraph) cameras. More than 70 people representing 18 different countries have helped spot comets over the last 15 years by searching through the publicly available SOHO/LASCO images online. The 1999th and 2000th comets were both discovered by an astronomy student at the Jagiellonian University in Krakow, Poland.
“There’s an ever-growing community of amateur astronomers who contribute to this project,” says Karl Battams, who has been in charge of running the SOHO comet-sighting web site since 2003 for the Naval Research Laboratory, where he does software development, data processing, and visualization work for NRL’s solar physics missions. “These volunteers are absolutely fundamental to the success of this program. Without them, most of this tremendously valuable astronomical data would never see the light of day.”
It’s Time to Count the Stars
By Lisa Gardiner October 15th, 2011 at 7:42 pm | Comment

Each purple mark is where someone has taken a look at the stars overhead and reported the data to Star Count.
Wow! Take a look at the map on the Great World Wide Star Count website. The fall campaign started yesterday and already there are oodles of citizen scientists from around the world posting their data. Citizen scientists from China, Australia, India, Kuwait, Egypt, South Africa, the European Union, Canada, United States, and Mexico have gotten involved so far. They are all looking at how bright the stars are overhead to help us get a better understanding of how streetlights, porch lights, car headlights and other nighttime lights affect how we see the stars in the sky.
Because different stars are visible in different parts of the planet, people north of the equator, in the Northern Hemisphere, are looking for different stars than people south of the equator in the Southern Hemisphere. Citizen scientists that are participating in the Great World Wide Star Count in the Northern Hemisphere are looking at the brightness of stars in the constellation Cygnus. Citizen scientists in the Southern Hemisphere are looking at the brightness of stars in the constellation Sagittarius.
To join the worldwide star gazing effort, print the magnitude chart from Star Count. Then, an hour after sunset sometimes between October 14 and 28, 2011, go outside and find the constellation Cygnus or Sagittarius in the sky. (If you’d like to plan ahead yet are not sure what time the sun sets, you can figure it out with a sunset calculator.)
How bright are those stars? Can you see them clearly or are they hard to see? Compare the way the constellation looks in the sky with the magnitude charts. Record the magnitude of the stars according to the directions in the activity guide and you are ready to report your findings at the Star Count website.
After reporting the magnitude of the stars you saw, take a look at the results pouring into the Star Count map. In the five years that the project has been going on, tens of thousands of people have participated from about 90 countries around the world. You might notice on the map that the same stars appear brighter in some areas of than they do in others. The stars are the same, but they are being seen from places that have different amounts of light pollution – lights from buildings, roads and parking lots that make it difficult to see the stars of the night sky.
Great World Wide Star Count
Days: October 14-28, 2011
Time: An hour after sunset
Enjoy to stars!
10 back-to-school projects for young citizen scientists
By John Ohab September 13th, 2011 at 12:09 pm | Comment 1
World Water Monitoring Day is one of many citizen science projects for primary and secondary school students.
As summer comes to a close, a young person’s fancy may turn to fretting at the thought of being cooped up in a classroom. But for fans of science and nature—and by that we mean kids who like to watch clouds, hunt mushrooms, prowl around graveyards, and check out what gets squashed on the side of the road—fall need not signal the end of fun.
To keep young minds entertained as well as enlightened, we recommend the following 10 back-to-school projects for student citizen scientists. Teachers and parents, please note: Many of these programs provide materials around which you can build lessons. And there are lots more where these came from. Visit our Project Finder for a full list of citizen science projects for primary and secondary school students.
World Water Monitoring Day: World Water Monitoring Day is an international program that encourages citizen volunteers to monitor their local water bodies. An easy-to-use test kit enables everyone from children to adults to sample local water bodies for basic water quality parameters: temperature, acidity (pH), clarity (turbidity), and dissolved oxygen. Though World Water Monitoring Day is officially celebrated on September 18, the monitoring window is extended to cover the period from March 22 (World Water Day) until December 31. Check out what one of our members said about the project.
School of Ants: Join North Carolina State University researchers in a citizen-scientist driven study of the ants that live in urban areas, particularly around homes and schools. Collection kits are available to anyone interested in participating. Teachers, students, parents, kids, junior-scientists, senior citizens and enthusiasts of all stripes are involved in collecting ants in schoolyards and backyards using a standardized protocol so that project coordinators can make detailed maps of the wildlife that lives just outside their doorsteps.
The Albedo Project: Wherever you are – anywhere in the world – on September 23th, contribute to science by taking a photo of a blank white piece of paper, outside in the sun, between 4:00 and 7:00 pm local time. Your photo will used to to help students measure how much of the sun’s energy is reflected back from the Earth — our planet’s “albedo.” It’s one way scientists can monitor how much energy – and heat – is being absorbed by our planet.
Students’ Cloud Observations On-Line (S’COOL): Report your observations of clouds—their shapes, height, coverage, and related conditions—so that NASA scientists can compare them with data from weather satellites passing over your area. Tutorials and observing guides are available for students. For teachers, the program provides lesson plans, charts, and advice on related educational standards.
Physics Songs: Physics Songs aims to be the world’s premier website devoted to collecting and organizing all songs about physics. It is managed by Walter F. Smith, Professor of Physics at Haverford College. Songs about physics can help students to remember critical concepts and formulas, but perhaps more importantly they communicate the lesson that physics can be fun.
What’s in your water heater? NASA wants to know!
By John Ohab August 12th, 2011 at 7:39 pm | Comment
Researchers at Penn State University need your help to study the distribution of microorganisms in household hot water heaters. Turns out your everyday hot water heater can double as a model hot spring, one of Earth’s extreme environments where important clues about microbial life in the Solar System might be found.
First, researchers want to better understand the genetic differences of similar microbes from across the globe: Which populations of microbes are isolated and what can this tell us?
Penn State’s Astrobiology Research Center (which is part of the NASA Astrobiology Institute) is running this citizen science project, titled, “Pilot Citizen Science Study of Distributed Domestic Water Heater Microbiology Diversity” and here’s how it works:
Participants take a water sample from their kitchen tap and answer 20 questions to help determine which-and how many–microorganisms are present. The whole process takes about 30 minutes. Researchers will then combine your answers (data) with contributions from households across the country. The goal is to generate a first image of the biogeographic distribution of microorganisms across the United States.
I had a chance to chat with Dr. Chris House, Associate Professor of Geosciences & Director of the Penn State Astrobiology Research Center. He gave me the inside scoop on microbes, why they’re important, and how the study will help NASA understand extreme environments around the Solar System.
Off we go!
First, what are microbes doing in water heaters? Is that bad?
Chris: The main microbial group known from water heaters is Thermus. This thermophilc species is also known from hot springs around the world and was first isolated from Yellowstone National Park. It lives by using oxygen to consume organic material from the water. It is not harmful in any way. Read the rest of this entry »
Snap a picture and measure albedo!
By Lisa Gardiner June 14th, 2011 at 1:15 pm | Comment 1

Turn a piece of paper into scientific data!
This post was originally published on Citizen Science Buzz, a blog on TalkingScience that highlights science projects that are helping us better understand our planet and the Universe
Wherever you are – anywhere in the world – on June 21st consider taking and submitting a photo of a blank white piece of paper between 5:00 and 8:00 pm.
Your photo will not be just a picture of a pretty white piece of paper, it will be scientific data used to calculate earth’s albedo – the proportion of solar energy that bounces back out to space when it hits the Earth’s surface.
For three years Dr. Kathleen Gorski and her students at Wilbraham and Monson Academy near Springfield, MA have been snapping pictures of white paper and using them to measure albedo by comparing the white paper to the surrounding ground surface.
Now they are opening the project up to anyone who would like to participate!
Here’s how you can get involved:
- Stick a reminder in your calendar for Tuesday June 21, 2011 between 5:00-8:00 pm so that you don’t forget. (Note: I added this step to Kathleen’s instructions because I know I will need a reminder!)
- Put a white card (index or business cards work well) on any ground surface with the white side facing up.
- Snap a digital photo. No particular position for the camera is required. Just hold it, look down, and take the shot. (Kathleen has found that any camera will do – a cell phone or SLR will both work. And any resolution will be fine.)
- Email the photo to albedo.project@gmail.com.
- 5. Include the location (either your city and state or your latitude and longitude).
Kathleen and her students will analyze the data, comparing the response of the white card to the response of the ground surface in each photograph using ImageJ software and will depict the data points on a map. They will be posting the results this summer or fall on a new project website, and Kathleen will be presenting about the project to teachers at the National Science Teachers Association meeting in Hartford, CT in the fall.
The importance of thinking scientifically
By Anne Toomey April 1st, 2011 at 3:34 pm | Comment 1

Dutch schoolteacher Hanny van Arkel, discovered the strange green "voorwerp" (Dutch for "object") in 2007. (Photo: NASA)
What does it mean to think scientifically?
If you asked me this question when I first moved back to New York three years ago, I’m quite positive I would have said something like, “What do I know? I’m not a scientist,” and pointed the questioner in the direction of the nearest pocket-protecting nerd in the vicinity.
Science was never one of my best subjects (I can still remember my high school physics teacher, Dr. Moroni, speeding out of the parking lot in his Pontiac Aztek to avoid telling me that I had failed the final exam). In fact, it was the very last thing I thought I would get involved in upon settling into my artsy Brooklyn neighborhood in 2008 to write my first novel. However, since my discovery of citizen science through the Earthwatch Institute and WildMetro, I now consider myself an unofficial member of the super hip NYC science community, whose events on such sexy topics as the dark matter and neuroscience are more likely to be full of trendy 30-somethings sipping beer out of plastic cups than pale, lab coat wearing individuals with microscope indentations around their eyes.
To begin a journey into the realm of the scientific mind, let’s go back in time about 177 years ago, when the word “scientist” first appeared in the Oxford English Dictionary. Before this transitional moment in human history, people we would now think of as scientists were called “natural philosophers” – those who studied the workings of nature. Some of these philosophers, such as Anton van Leeuwenhoek and Michael Faraday, had little formal training in their chosen subjects, but came to learn about science through a personal desire to come up with answers to their individual questions about the universe. Science was less a profession or an academic field as it was a way of thinking about the world and understanding its mysteries through direct observation.
In some ways, the study of science was more accessible two hundred years ago than it is in today’s science classrooms, where students are typically tested on their ability to remember the answers to hundreds of questions that have already been answered, rather than being encouraged to look up at the sky or at a blade of grass and come up with questions of their own.
The first step for citizen scientists: enjoying nature
By Anne Toomey March 9th, 2011 at 4:54 pm | Comment
During the past week, I’ve experienced nature from a state of semiconsciousness in my bed. Almost every morning, the same lonely male cardinal practices his songs for spring, occasionally interrupted by a pair of blue jays imitating a hawk or a small flock of monk parakeets flying overhead from their nests.
There’s something special about doing citizen science from your bedroom with your eyes closed – even if I have yet to find a project that will accept data that is taken while you’re half-asleep.
A couple of days ago, I had a brilliant idea: citizen science from the comfort of my bed! I can count the stars, peer through my window at birds (which has the additional benefit of freaking out the neighbors), and measure snow accumulating on my fire escape – all without experiencing the February cold!
I tried this for a couple of hours one morning, attempting to conduct as many scientific experiments as possible from my 8×4 foot bedroom. Yet, something was missing from the experience. I found myself getting bored and my mind floating between the unread emails in my inbox and the uneaten chocolate in the refrigerator. So, the next morning, I threw on some warm clothes, filled up a travel mug with hot coffee, and headed over to Prospect Park to figure out what was missing.
Dr. Stu’s Reviews: citizen science puzzles
By John Ohab March 7th, 2011 at 9:50 am | Comment 1
This guest post was contributed by Dr. Stuart Farrimond, a science teacher at Wiltshire College in the United Kingdom.
If you’ve ever felt like you could be an undiscovered genius, then today’s blog post is for you!
Get ready to use your grey matter to push back the boundaries of science… by playing video games! If you think you could be the next Einstein (without the hair, of course), just put down that Sudoku and take a look at these computer games. You never know, you just might help discover the cure for cancer (seriously)!
Now, a new way of crowdsourcing our brain power has arrived. No longer do you need to feel guilty for playing Angry Birds because now you can indulge your puzzle gaming passion for a good cause. By doing some online puzzles, you can unwittingly do some of the problem solving that scientists don’t have the time to do. And take heart because researchers have even discovered that members of the public are just as good as professionals at solving even the most complex of problems!

5. Old Weather: Help Predict Global Warming
Do you enjoy history? Do you like trying to decipher and decode riddles? If so, then Old Weather could be up your street.
After registering online at the Old Weather website, you “climb aboard” a World War I Royal Navy warship. You are tasked with reading and deciphering a scanned image of the ship’s weather log. As you and other online players simultaneously track work out through the ship’s journey, you can watch the warship move across the globe, your efforts being shown on a world map for all to see!
Good For: history buffs, environmentally-minded crossword fans, and nautical enthusiasts.
Play Old Weather!
Be a star: join the international star-hunt!
By John Ohab February 21st, 2011 at 2:33 pm | Comment
Have you ever seen the Milky Way from where you live? Most of us have not, and it’s largely due to increased light pollution from outdoor lighting. Light pollution not only wastes billions of dollars a year in energy and money but it causes human sleep disorders and disrupts habits critical to ecology.
Globe at Night is an international star-hunting campaign that needs volunteers to record their observations of particular constellations in order to measure light pollution. This year’s campaign runs from February 21 through March 6, 2011.
Last year, citizen scientists contributed 17,800 observations and raised awareness about the issue all over the world. The project takes just a few minutes of your time to measure sky brightness and contribute those observations online. Those of you that are tech-savvy can contribute in real-time via the Globe at Night web app. Out of this world!
Contributing to Globe at Night is as easy as pie:
1. Find your latitude and longitude.
2. Find Orion by going outside an hour after sunset (about 7-10pm local time).
3. Match your nighttime sky to one of the project’s magnitude charts.
4. Report your observation.
5. Compare your observation to thousands around the world.
Be a star! Join Globe at night!






