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Wednesday, September 19, 2007

NASA is beginning the final preparations for next Wednesday’s launch of the Dawn probe, aboard a Delta II rocket. The Dawn probe, costing over US$250 million, will visit the dwarf planet Ceres and the asteroid Vesta. The launch was originally planned for mid-June, however due to a damaged crate, shipping delays, and a damaged solar panel, NASA chose to delay it until now. Last week the spacecraft was delivered to the launch pad, and engineers performed tests to ensure that it is ready for launch. Today, the payload fairings were installed, and the probe is ready for its launch next week onto its 5 billion kilometer (3.2 billion mile) mission.

As the Delta II launches, three stages of rockets will propel the probe towards its first target. With the help of ion thrusters, it will reach Mars in mid-2009. Using Mars’ gravity, the probe will speed up and proceed towards the first asteroid, Vesta, in late 2011. After orbiting for seven months, it will leave Vesta in mid-2012, and arrive at Ceres in 2015. After making scans of Ceres, it will enter an orbit around Ceres that will ensure that it does not impact the asteroid for half a century. This is required due to the United Nations’ “Outer Space Treaty”, which states that “harmful contamination” of these asteroids must be avoided.

The targets of this mission, Ceres and Vesta, couldn’t be less alike. Ceres (diameter 975 km, 600 miles) is larger than Vesta (578 km, 350 miles). This makes Ceres approximately the size of Texas. NASA believes Ceres could contain water beneath its outer crust because, like Earth, its inner layers are heavier than the outer layers, and Ceres’ outer layer is lighter than water. Vesta, on the other hand, is the size of Arizona, and has a surface of volcanic rock, which astronomers believe came from its hot inner layers. Vesta also has a large crater – almost 500 km (300 miles) across – on its southern pole. The collision that caused this likely blasted enough rock into space to fill a container 160 by 160 by 80 km (100 by 100 by 50 miles).

The probe will make several observations of these asteroids: it will compare the makeup, shape, size, and densities, analyze craters, and determine mass, gravity, rotation. To determine the makeup, the probe carries a mapping spectrometer, and tools to map emissions of neutrons and gamma rays. Using this information, NASA can compare the formation of these bodies to learn more about our solar system, for example, to test a theory which states that a number of stony meteorites may be debris from Vesta.

There’s one more piece of equipment aboard the probe: A small silicon chip containing the names of 350,000 people who submitted their names to the “Send Your Name to the Asteroid Belt” campaign. After next week’s launch, the spacecraft will deploy its solar panels and undergo two months of testing before it begins the cruise to Mars.

Monday, October 11, 2010

Wikinews interviewed author Amy Scobee about her book Scientology – Abuse at the Top, and asked her about her experiences working as an executive within the organization. Scobee joined the organization at age 14, and worked at Scientology’s international management headquarters for several years before leaving in 2005. She served as a Scientology executive in multiple high-ranking positions, working out of the international headquarters of Scientology known as “Gold Base”, located in Gilman Hot Springs near Hemet, California.

Saturday, September 9, 2006

Eight Californians contracted a rare lung infection after eating live sawagani crabs at several southern California restaurants.

The freshwater crabs, also known as river or regal crabs, were purchased in several restaurants, including Riptide Rockin’ Sushi & Teppan Grill in Mission Viejo and Chomp Rockin’ Sushi & Teppan Grill in Fullerton. The crabs were infected with a parasite called paragonimus, a flatworm similar to lung fluke.

The parasite travels to the lungs six to ten weeks after ingestion. Symptoms include coughing, diarrhea, breathing problems, chest pain, abdominal pain, fever, and hives. The worm can spread to other organs, including the brain.

According to Wikipedia, about 5,000 Americans die of foodborne illness every year.

Friday, January 16, 2009

American politician Roland Burris of the United States Democratic Party was sworn in Thursday as US president-elect Barack Obama’s replacement in the United States Senate.

Burris was initially not admitted into the Senate, even though Governor of Illinois Rod Blagojevich appointed him to the position, due to allegations that the governor tried to sell the seat. Blagojevich was arrested and has been impeached for the alleged crime. Burris was denied his position on January 6 by other Democratic members of the Congress because his appointment papers were not signed by Jesse White, the Illinois Secretary of State, who had refused to sign his name due to the charges faced by Blagojevich.

Burris was officially sworn in by United States Vice President Dick Cheney with no objections from other members of the Congress. Harry Reid, the senior Democratic senator from Nevada and majority leader, who had led the opposition to Burris being appointed, welcomed him into the Senate.

“On behalf of all senators, Democrats and Republicans, we welcome you as a colleague and a friend,” Reid said.

“No one’s ever had anything against Sen. Burris. Like any other senator, he’ll have to learn the ropes and not get lost getting to committee hearings, like I have. I think he’ll come in with people open to meeting with him and getting to know him. I think it will be just fine,” said Senator Amy Klobuchar of Minnesota on the matter. Most other comments by senators stated that they were not against Burris as a person, but were against his appointment by Rod Blagojevich.

With the appointment, Burris becomes the only African-American member of the United States Senate. This makes the count of Democrats to Republicans in the Senate 58 Democrats and 41 Republicans, with the final seat waiting on a vote recount ordered by Norm Coleman in his loss to Al Franken of Minnesota.

Friday, September 9, 2016

Thursday, June 28, 2007

The European Space Agency (ESA) is seeking volunteers who would be ready to take a part on three simulated missions to Mars.

The anticipated missions will be a joint effort from ESA and the Russian Federal Space Agency. Each crew will consist of six persons – two Europeans and four Russians. The ESA is looking for 2 crewmembers and two backups that must come from ESA member nations that participate in the ELIPS program.

The flight simulation should last between 105 to 520 days in a closed modules set of total space of 500 m³. The goal of the mission is to test the psychological stress of the long-distance travel. To make the experience as realistic as possible, the contact with the external world shall exist only via the radio with a time-delay of 40 minutes (simulating the time required for signals to travel between the Earth and Mars).

The first test of 105 days should start in middle of 2008 and the last one should start at the end 2008 or the beginning of 2009.

Interested persons can apply via an application form published on the ESA website.

Wednesday, June 12, 2013

In May, periodical cicadas with 17 years life cycle emerged on the East Coast of the USA after underground development as juveniles since 1996. Researchers and scientists worked to map and study the rare wave, and the locals prepared for the noisy event. First recorded in 1666, the Magicicada septendecim species recently emerged in 1979, 1996, this year, with a next wave due in 2030.

This week, Wikinews interviewed Chris Simon, an ecology and evolutionary biologist at University of Connecticut, about the cicadas.

((Wikinews)) What caused your initial interest in periodical cicadas?

Chris Simon: As an undergraduate student, I was interested in the formation of species so when I went to graduate school I looked for a study organism that was likely to be in the process of forming new species. I chose periodical cicadas because they are broken up into reproductively isolated broods (or year classes). Reproductive isolation leads to speciation so I planned to study biochemical differences among the broods.

((WN)) You study the emergence of the periodical cicadas. What do you study? What observations are you making?

CS: We record exactly where each cicada population emerges (using GPS automated mapping and crowd sourcing). We record the presence or absence of each of the three morphologically distinct species groups of periodical cicadas (Decim group, Cassini group, and Decula group). We collect specimens for DNA analysis. We look for cicadas coming up one and four years early and late. We dig up cicada nymphs and monitor their growth rates.

((WN)) What equipment do you use?

CS: Nets, shovels, automated GPS recorders, cameras, laptop computers, automated DNA sequencers.

((WN)) Do you study the periodical cicadas with anyone else? What is their role?

CS: Yes, there are a large number of people studying periodical cicadas in my lab and in other labs. My lab is made up of Research Scientists, Postdoctoral Researchers, a technician, graduate students, and undergraduates. Research Scientist John Cooley is the leader of the GPS mapping project; he invented the automated GPS recorder; he built our crowd-sourcing website, and he is instrumental in public outreach. Postdoctoral research David Marshall also participates in the mapping project and leads the part of the research related to the mapping of stragglers. John and Dave and Technician Kathy Hill all study periodical cicada mating behavior and conduct mating and hybridization experiments. One of my graduate students Beth Wade has participated in the nymph collections and will soon start genetic work involving genome wide association mapping designed to locate genes related to life cycle. My graduate student Russ Meister is studying the genes of the bacterial endosymbionts of cicadas. My current undergraduate honors student Erin Dwyer is also studying the development of Magicicada nymphs and is helping to design a lab exercise for college students around the eastern US to do the same. Many of my past undergraduate students have studied the biochemical genetics and development of periodical cicadas. See the Simon Lab website.

CS: We are collaborating with Teiji Sota at the University Kyoto and Jin Yoshimura at Shizuoka University in Japan. They are studying the phylogeography of Magicicada. We are collaborating with John McCutcheon of the University of Montana who is studying the endosymbiont genomes.

CS: We are also collaborating with ecologists Rick Karban and Louie Yang, both professors at UC Davis who have an interest in cicada population dynamics and nutrient cycling in the ecosystem.

((WN)) You studied the periodical cicadas in 1979 and 1996 too. What changes with time?

CS: I have studied periodical cicadas since I was a student back in 1974. What changes with time is increased human development constantly shrinking the patch size of cicada populations.

((WN)) What are your thoughts on the long life span of the periodical cicadas? Why could it be so? What advantages and what disadvantages does it have?

CS: Most or all cicadas have long life cycles compared to your typical annual insect. Examples have been found of two-year to 9-year cycles in different species. Periodical cicadas evolved an even-longer life cycle and I think that part of this relates to the evolution of their synchronized life cycles and peculiar safety-in-numbers strategy for survival. To become synchronized, periodical cicadas had to evolve an exact length life cycle and all adults would have to appear in the same year. Because the nymphs grow at different rates underground, a longer life cycle and a way of counting years must have evolved so that the individuals that get to the last nymphal (underground juvenile) stage first would wait long enough for all other individuals in the population to become ready to emerge.

((WN)) News reports mention this is ‘Brood II’ of the periodical cicadas. What are the distinctive features of this specific species and what is its full scientific name?

CS: The same species exist in multiple broods. No species is restricted to Brood II. The three species present in Brood II are: Magicicada septendecim, M. cassini, and M. septendecula. These same three species are found in every 17-year brood (except the farthest north which only has M. septendecim).

((WN)) At what depth do the cicadas juveniles live underground?

CS: Most live within the top foot of soil but some have been found deeper. We do not know if they go deeper in winter. We need to do much more digging to understand the nymphs.

((WN)) How do people prepare for the cicada emergence?

CS: Of course various people prepare in different ways. Ideally, everyone prepares by studying information available on the web (especially on our websites Magicicada Central and Magicicada.org).

((WN)) Do cicadas affect transport in the local area?

CS: No, not really. Occasionally individuals can be seeing flying across highways and sometimes they smash into cars.

((WN)) Do cicadas usually stay outside or do they also invade houses too?

CS: They stay outside. One might accidentally fly in through an open window but that would be rare.

((WN)) What do the cicadas eat?

CS: Cicadas suck xylem fluid (the watery fluid coming up from the roots of plants) in deciduous forest trees and herbs. Essential amino acids in the cicada diet are supplied by their bacterial endosymbionts. There are two species of endosymbionts. One makes 8 essential amino acids and one makes two essential amino acids.

((WN)) Do cicadas damage crops or city vegetation? What damage?

CS: Cicadas do not chew leave so they do not damage crops like other insects. They can inflict some damage by their egg laying. Cicadas lay eggs in pencil-sized tree branches. If there are not enough branches available, too many female cicadas may lay eggs in a single branch weakening it and making it susceptible to breakage by wind. This can sometimes cause damage in fruit orchards. If the branches break, the eggs die so this behavior is selected against by natural selection.

((WN)) Thank you.

CS: You’re welcome. I am happy to have this opportunity to communicate with your readers!

Tuesday, February 26, 2008

In New South Wales today, thousands of people joined a protest including 15 Labor Members of Parliament about the State Government’s plans to privatise the electricity industry.

The MPs included Paul Gibson, Upper House president Peter Primrose, and former MPs Kerry Hickey and Grant McBride.

Mr Gibson was reported as saying, “I’m a member of the Australian Labor Party and I’m sticking to the Labor platform and policy.”

The Government seems to have ignored the positions of the protesters, with Premier Morris Iemma expressing to the first sitting of Parliament for 2008 that his Government’s plans would proceed.

Related instances in Tamworth occurred, when workers in the Electricity Trade Union walked off the job.