Category: Points of Information

Here is another example of why I remain skeptical of any claims that the science of global warming is settled. Ken Stewart, a retired school teacher in Australia, decided to make a very detailed comparison between the raw data and adjusted data of all thirteen weather stations in the state of Victoria, and found that, for unknown reasons, the adjusted “data [has] been arbitrarily adjusted to cool earlier years,” thereby creating the illusion that the region’s climate has been warming since the 1930s.

Take a look at the many graphs on his webpage. It will make you wonder.

Why I never use Wikipedia. Key quote:

The larger moral of this story is that Wikipedia itself is a fundamentally flawed and unreliable source. In fact, it is wrong even to describe — much less to use — Wikipedia as a source. Wikipedia is merely a platform. Since anyone and everyone can edit Wikipedia entries and since they can do so anonymously, Wikipedia is, by its very nature, susceptible to constant manipulation.

Mission operators at the Applied Physics Lab in Maryland did a 35 second course correction yesterday on the New Horizon’s mission to Pluto, increasing its velocity by one mile per hour. The planned fly-by now set for July 14, 2015.

A new picture of the Japanese solar sail Ikaros has been released, showing the sail in operation. By turning power on and off to different sections along the sail’s rim, engineers can change the way light reflects off those sections to control the sail’s attitude in space without using fuel. Note also that the power comes from sunlight, not from batteries. The picture below illustrates this, with different parts of the rim either bright or dark, depending on whether they are powered or not.

NASA has now made it official: they have set the dates for the last two shuttle flights, extending the program into late February 2011. Considering the dissatisfaction in Congress and with the public over the lack of any replacement for the shuttle, don’t be surprised if at least one more shuttle flight gets added to the schedule.

Want to get a sense of the subtleties and complexity of rocket engineering? Go to this Chris Bergin report at nasaspaceflight.com about the unusual number of visible streaks of light that were seen in the engine plume of the shuttle’s main engines during the last flight of Atlantis. Who would have thought this matters? It does.

Enough with depressing space news. Take a break and watch Andrew Klaven’s totally untrue but very silly analysis of how global warming broke up the Gore marriage.

And are we supposed to be happy? NASA is going to give the last shuttle external tank a send off ceremony when they roll it out for shipment by barge to the Cape on July 8.

Always remember: science is doubt! Since the 1970s, most oceanographers have favored the theory that past ice ages on Earth were caused by the switching on and off of a global ocean conveyor belt. Now, that decades-old theory is being questioned.

Another chance to travel on Mars. JPL has published a nice annotated image of that Opportunity panorama I noted yesterday, detailing the specific features of the Endeavor crater now visible on the horizon.

It appears there may be a problem with the Dawn spacecraft.

Check out this impressive footage of a night time test of the U.S. THAAD interceptor missile. The system works! Unfortunately, the new space policy of the Obama administration will probably end the program. I will have more to say about that tomorrow.

The first image of an extrasolar planet, originally taken in 2008, has been confirmed. Scientists needed to track the object for the last two years to prove that it actually is in orbit around its sunlike star.

After their successful first launch several weeks ago, the Dragon capsule and upper stage of Falcon 9 fell back to Earth over the weekend.

The first solar sail finally flies. The Japanese have activated Ikaros and are beginning actual flight tests.

The space war between Congress and the President over space continues.

Japanese scientists have taken their first look inside the Hayabusa capsule. So far, they’ve detected some unidentified gas, but no particles bigger than 1 millimeter.

On Sunday, Deep Impact flies past Earth to give it a boost so that it can rendezvous with another comet on Nov 4, 2010.

India has joined the Thirty Meter Telescope Project. This is important as it shows how much India is becoming a first world nation. It also indicates that nation’s continuing passion for all things space-related. Also, the Thirty Meter Telescope (with a mirror the size of a football field!) is cool on its own.