Category Archives: astronomy

An Interesting Use of Facts

The Planetarium Projector Funds Never Got Out of Committee

As reported on Politifact, the funding that Mr. McCain says Mr. Obama voted for to help Adler to get a 40-year-old projection system replaced (NOT an overhead projector) was never allowed past the Senate Appropriations Committee. Mr. Obama did request the earmark, as was his right as a Senator (and Mr. McCain has requested quite a bit of money over the years, too).

So, Mr. McCain’s question, “do we need to spend that kind of money” is more rhetorical and just kinda glosses over the fact that the money was asked for but that appropriation request didn’t pass.  Kinda disingenuous of Mr. McCain to overlook that last part, you betcha. By golly.

The sad thing is that these facts could have been gleaned by Mr. McCain’s prep team if they’d bother to read the Congressional Record (paid for and made available by taxpayer dollars).  But they didn’t. So, the debate tactic of calling his opponent out on funding for a planetarium system that will benefit millions is an interesting one-sided use of facts and inferences, ignores an important point, and really just is a foul shot.

Once again it’s fair to ask: if Mr. McCain’s handlers got this one wrong, what else are they getting wrong?

Thanks to Mark for digging up the Politifact link.

UPDATE:

Here’s a statement from Adler Planetarium

STATEMENT ABOUT SENATOR JOHN McCAIN’S

COMMENTS AT THE PRESIDENTIAL DEBATE

Last night, during the presidential debate in Nashville, Tennessee, Senator John McCain made the following statement:

McCain: “While we were working to eliminate these pork barrel earmarks he (Senator Obama) voted for nearly $1 billion in pork barrel earmark projects. Including $3 million for an overhead projector at a planetarium in Chicago, Illinois. My friends, do we need to spend that kind of money?”

To clarify, the Adler Planetarium requested federal support – which was not funded – to replace the projector in its historic Sky Theater, the first planetarium theater in the Western Hemisphere. The Adler’s Zeiss Mark VI projector – not an overhead projector – is the instrument that re-creates the night sky in a dome theater, the quintessential planetarium experience. The Adler’s projector is nearly 40 years old and is no longer supported with parts or service by the manufacturer. It is only the second planetarium projector in the Adler’s 78 years of operation.

Science literacy is an urgent issue in the United States. To remain competitive and ensure national security, it is vital that we educate and inspire the next generation of explorers to pursue careers in science, technology, engineering and math.

Senator McCain’s statements about the Adler Planetarium’s request for federal support do not accurately reflect the museum’s legislative history or relationship with Senator Obama. The Adler has approached the Illinois Congressional delegation the last few years for federal assistance with various initiatives. These have included museum exhibitions, equipment and educational programs we offer to area schools, including the Chicago Public Schools. We have made requests to Senators Durbin and Obama, as well as to 6 area Congressmen from both political parties. We are grateful that all of the Members we have approached, including Senator Obama, have deemed our activities worthy of their support, and have made appropriations requests on our behalf, as they have for many worthy Illinois nonprofit organizations.

As a result of the hard work of our bipartisan congressional delegation, the Adler has been fortunate to receive a few federal appropriations the past couple of years. However, the Adler has never received an earmark as a result of Senator Obama’s efforts. This is clearly evidenced by recent transparency laws implemented by the Congress, which have resulted in the names of all requesting Members being listed next to every earmark in the reports that accompany appropriations bills.

*****

Update 2: Here’s a link to a great article by my friend Jim Sweitzer — he writes about the Adler from his POV as someone who spent a long time working at Adler as an astrophysicist and now advises other facilities. Welcome to the fray, Jim!

Update 3:  A friend just pointed me to this great discussion at DailyKos (some comments are a bit salty).

(CCP here again —  U.S. citizens — have you registered to vote?)

Another Side of Mercury

More Cool Planetary Science

A wide-angle camera view of Mercury
A wide-angle camera view of Mercury

Yesterday the MESSENGER mission did a close flyby of Mercury and began returning high-resolution images.  I’ll start with the last one first — it was was taken about 90 minutes after the spacecraft’s closest approach to the planet, while Messenger was on the way “out”.

The bright crater in the center is called “Kuiper” — named after Gerard Kuiper, a well-known planetary scientist.  This crater was first spotted in Mariner 10 images in the 1970s, but the real news is that this image shows terrain we haven’t seen before. Everything east of Kuiper (toward the limb (right edge) is new to our eyes. Notice the rays extending out across the whole right side of the image, emanating from a relatively fresh crater that had only been seen at low resolution from Earth using radar scanning techniques. This gives planetary scientists a whole new side of Mercury to interpret as they work to understand Mercury’s formation and cratering history.

A close-up of Mercury a few minutes after close approach.
A close-up of Mercury a few minutes after close approach.

Only a few minutes after closest approach, the spacecraft snapped this image of Mercury’s cratered, pitted surface. The last time anybody saw an image of this part of Mercury was from Mariner 10 in the 1970s. The largest impact feature at the top of the image is about 133 kilometers (83 miles) across and is named Polygnotus (who was a Greek painter who lived in the 5th century B.C.). It has a central peak ring and is surrounded by smooth plains material (which probably was molten rock that flowed and hardened after the impact). Another large crater at the top left of the image is called Boethius (after a 6th century Roman philosopher).  It also appears to be almost filled with smooth plains (probably formed the same way).  Sometime well after the impact which created the crater, the whole area was deformed during the formation of a prominent scarp (a cliff).

Never-before-seen terrain on Mercury
Never-before-seen terrain on Mercury

Finally, from a time about 58 minutes before closest approach, Messenger snapped this dynamic image, which I think gives a nifty 3D “feel” for those of us watching on flat screens. The features in the foreground, near the right side of the image, are close to the terminator, the line between the sunlit dayside and dark night side of the planet, so shadows are long and prominent.  You can make out two very long scarps that appear to cut across each other. One occurred first, and then sometime later, tectonic forces created the other one. The easternmost scarp also cuts through a crater, which means that it formed after the impact that created the crater. Other neighboring impact craters, such as in the upper left of this image, appear to be filled with smooth plains material (again, probably from molten rock that flowed after the impact and then cooled and hardened).

There will undoubtedly be more images coming from the MESSENGER mission. If you want to follow the action and get larger versions of all the images, point your browser to the MESSENGER website gallery. Mission scientists are examining images and putting them up as they do — so check frequently!