goodfellowsmansfield.com

Thursday, December 10, 2009

American and European scientists say the upgraded Hubble space telescope has spotted the oldest galaxies ever seen. The images were taken with the telescope’s new Wide Field Camera 3 (WFC3) in August this year.

The galaxies are about 13 billion light years from Earth, meaning they formed less than one billion years after the Big Bang — the cosmological model of the initial conditions and subsequent development of the universe.

WFC3 was installed in May this year, during a mission by the space shuttle Atlantis to repair and upgrade Hubble. Experts say the new instrument will let them peer even further back in time, to when the universe was in its infancy. The more distant a galaxy is, the more its light is “redshifted” due to expansion of the universe. Light from the furthest galaxies is shifted to infrared wavelengths invisible to the human eye, but WFC3 can detect these.

The new image was taken in August, in the same region as a 2004 visible light image known as the Hubble Ultra Deep Field. The 2004 photo previously showed the most distant galaxies, but the new infrared pictures from the WFC3 allow even more remote galaxies to be seen.

Capturing the image took four days, and the total exposure lasted 173,000 seconds. In the three months since, twelve scientific papers have been submitted on it. On Tuesday one of these confirmed the galaxies as the furthest ever seen.

They are also the oldest, with the light from them having taken around 13 billion years to reach Earth.

“At these distances, you’re really looking back in time, like you have a time machine,” said Ray Villard, of the Space Telescope Science Institute in Baltimore. “Those things don’t exist anymore.”

The photo could be one of the ultimate achievements of the Hubble telescope, now almost twenty years old.

“These new observations are likely to be the most sensitive images Hubble will ever take,” said Professor Jim Dunlop of the University of Edinburgh.

The servicing mission in May extended the telescope’s life by around five years, but it is scheduled to be replaced by the James Webb Space Telescope in 2014. This will use infrared imaging and have a greater collecting area than Hubble, and it is thought that it may be able make out objects from just 100 million years after the Big Bang.

“We’ve really pushed Hubble to its limits,” said Villard, “and we need a bigger space telescope to go back even farther. It shows us there are really exciting things to look for with the Webb telescope.”

Sunday, April 1, 2007

A magnitude 8.1 undersea earthquake triggered a tsunami that has killed at least fifteen people, including six children, in the Solomon Islands. Tsunami warnings have been issued for parts of Australia as well.

According to the US Geological Survey, the magnitude 8.0 quake struck Sunday, April 1, 2007 at 20:39:56 (UTC) about 45 km (25 mi) south-southeast of Gizo, New Georgia Islands, Solomon Islands, at a depth of 10 km.

Saturday, October 4, 2008

The U.S. Senate passed a revised bailout bill designed to help the struggling U.S. financial economy, which has measures nearly identical to the bill rejected by the U.S. House of Representatives on Monday.

“Senate Democrats and Republicans believe it is essential that we work quickly on this important legislation to restore confidence to our financial system and strengthen the economy,” said Senate Majority Leader Harry Reid.

The new revisions include raising the FDIC insurance cap to $250,000, a move designed to please progressives. However, the $110 billion in tax breaks, earmarks and what has been called pork barrel spending is not offset by any increases in revenues and has added opposition to the bill from some Representatives in the House.

Earmarks added into the bailout bill included $192 million in tax rebates for the Virgin Islands rum industry, $148 million in tax cuts for the wool industry, $100 million tax cuts to the auto racing industry, and $48 million in Hollywood tax incentives.

Vice President of Taxpayers for Common Sense, Steve Ellis, offered his explanation for the pork and earmarks added in. “People who support some of these provisions will forget about the $700 billion and concerns they may have on that, and say, ‘If you give me a few million in tax breaks for my constituents, I’ll go along'”.

The tactic seems to have worked, however, managing to flip enough votes to pass the bill.

“The inclusion of parity, tax extenders and the FDIC increases has caused me to reconsider my position,” said Representative Jim Ramstad (R Minnesota), who voted against the previous bill on Monday. “All three additions have greatly improved the bill.”

But Representative Marcy Kaptur (D Ohio) was not changing her no vote. “I will not support this legislation because it’s the wrong medicine,” she said.

The Senate took H.R.1424, a bill originating in the House concerning “equity in the provision of mental health and substance-related disorder benefits under group health plans, to prohibit discrimination on the basis of genetic information with respect to health insurance and employment,” and extended it with the bailout provisions.

H.R.1424 was introduced on March 9, 2007, by Rep. Patrick Kennedy (RI-1) and had the support of First Lady Rosalind Carter. It is noted on the Congressional Website that “On 10/1/2008, the Senate passed H.R.1424 as the vehicle for the economic rescue legislation. In the EAS version of the bill (Engrossed Amendment as Agreed to by the Senate), Division A (pp.1-110) is referred to as the Emergency Economic Stabilization Act of 2008; Division B (pp. 110-255) is referred to as the Energy Improvement and Extension Act of 2008; and Division C (pp. 255-441) is referred to as the Tax Extenders and Alternative Minimum Tax Relief Act of 2008.” It was not treated as an appropriations bill in the House.

There were two votes in the Senate. The first was to amend H.R.1424, which required 3/5 to be accepted, which it was. The second was a vote on the bill. Passage of the Bill required only a 1/2 majority. It was passed with 74 yeas and 25 nays. Senator Kennedy did not vote.

Thursday, February 12, 2009

An article in the February 12 issue of the New England Journal of Medicine reports on an unusual cause for an outbreak of low blood sugar among men in Singapore: illegal use of sexual performance enhancement drugs that were contaminated with a diabetes drug.

Between January and May 2008, 149 men and one woman between 19 and 97 (mean age 51) were admitted to five public hospitals for unexplained low blood sugar. Similar cases were reported in media reports from Hong Kong. Seven Singaporean patients remained in a coma because of prolonged sugar starvation of the brain, and four subsequently died. The diabetes drug glyburide was found in blood and/or urine samples in 85% of cases; 30% admitted having used illegal sexual performance enhancers.

The contaminated products were a counterfeit version of the drug Cialis (meant for the treatment of genuine erectile dysfunction), and three purported herbal preparation (the affected brands included Power 1 Walnut and Santi Bovine Penis Erecting Capsule). All four preparations additionally contained Viagra in varying concentrations. Two herbal products contained traces of the weight loss drug sibutramine, a compound related to amphetamines.

The drug packaging mentioned names of non-existent overseas production facilities, so the source of the contamination with the diabetes drug could not be established.

The authors underline the risks that is known to be associated with purchasing drugs from unreliable providers or from online resellers. The clandestine use of impotence drugs as sexual performance enhancers seems to have provided a good illustration of this problem. They further call for more efforts by national and international health and law enforcement agencies to curb the manufacturing, international transport and sales of untrustworthy medication.

Wednesday, March 21, 2007

The SpaceX Falcon 1 rocket has failed to place a DARPA demonstration payload into orbit, on its first flight into space. The rocket launched from Omelek Island, at 01:10 GMT on 21 March, just less than a year after its maiden flight which failed just seconds after launch.

The rocket, which is the first privately-funded liquid-fueled launch vehicle, was intended to place the payload into a low-Earth orbit, but all contact with the rocket was lost just over five minutes into the flight.

The first stage burn proceeded nominally, and separation occurred on schedule. As the first stage fell away from the second, it was observed to have impacted on the engine bell of the second stage. About five minutes into the flight, the second stage began to roll out of control. All data was lost at T+5 minutes, 5 seconds.