The High Resolution Imaging Science Experiment (HiRISE) camera would make a great backyard telescope for viewing Mars, and we can also use it at Mars to view other planets. This is an image of Earth and the moon, acquired on October 3, 2007, by the HiRISE camera on NASA's Mars Reconnaissance Orbiter.
At the time the image was taken, Earth was 142 million kilometers (88 million miles) from Mars, giving the HiRISE image a scale of 142 kilometers (88 miles) per pixel, an Earth diameter of about 90 pixels and a moon diameter of 24 pixels. The phase angle is 98 degrees, which means that less than half of the disk of the Earth and the disk of the moon have direct illumination. We could image Earth and moon at full disk illumination only when they are on the opposite side of the sun from Mars, but then the range would be much greater and the image would show less detail.
Monday, June 09, 2008
Earth from Mars
Friday, June 06, 2008
May-June China Trip
May 2008, China Trip
Here are some pics I took from my last trip to China. Most of the shots come from Hangzhou, where I stayed at the Hangzhou Xihu State Guesthouse -- and visited the Xixi Wetland National Park and Lingyin Temple. The slideshow above doesn't show all the photos. You'll have to follow the link to Webshots to see the rest of them.
Wednesday, June 04, 2008
Wednesday, May 28, 2008
Hello from Shanghai
I've arrived in Shanghai on business. Just got in a couple of hours ago, and decided to kill sometime by going for a walk along Nanjing Rd. -- "China's historic No. 1 shopping street. This Oxford Street of the East extends to over 5km from the Bund to Jing'an Temple including Nanjing Road East Pedestrian Street. Many shops are open till 10 p.m." I've forgotten what an entertainment the street could be. I got propositioned every few steps: "Watches, DVD, MP3, iPod, iPhone, t-shirt, sexy girl massage." It was the same thing, in the same order, from many of the street hucksters. I didn't bite, especially since they all pointed down a less than welcoming side street as the destination to finalize the deal. I did stop in the official Beijing Olympics store to make a couple of gift purchases, however. They had some cool merchandise -- probably once in a lifetime purchase.On another interesting note: entering mainland China requires the filling out of an arrival and departure card. Most countries have these, and I guess it's an exercise to keep track of visitors. On the back of the Chinese card, was printed the following:
Important NoticeThose are the rules. I'm obeying them.
- Aliens who do not lodge at hotels, guesthouses or inns shall, within 24 hours (72 hours in rural areas) of entry, go through accommodation registration at local police station.
- Aliens holding visas Z, X or J-1 shall, within 30 days of entry, apply for Residence Permits to the exit-entry department of the public security bureau of the city where the applicants reside.
- Aliens shall not be employed in China without permission of the competent authorities of the Chinese Government.
- Aliens who reside or stay in China shall carry with themselves their passports or Residence Permits for possible examination.
- In case of emergency, please dial 110 to seek help from police.
Monday, May 26, 2008
View from my Hotel
Saturday, May 24, 2008
Hello from Kowloon
I'm currently in Hong Kong on business. Spent most of my day today indoors, working. But, I had to get out around noon, since I was starving. I took a walk (see map below) from my hotel to Flower Market Street (a street just with flower shops -- I kid you not). It was a bit of a walk -- 4.4km according to Google Maps. Not bad, but I think I lost a year off with the walk. It was around 31 Celsius today, and quite sticky humid. Nathan Road was crowded with people -- and the air was stifling with smog. You couldn't really see it, but you could breathe it. It was thick, and with the humidity, it was like breathing soup -- really bad soup. The air was also filled with smells -- which I'm not going to comment on, other to say that your imagination has nothing on the reality. Along the way on Nathan, was a block guarded by giant Banyan trees. It was totally cool -- something I had never seen before. Especially to see them cropping out of sides of the roads. I also took the photo to the right of an outdoor market. I walked through it, and it definitely made for good people watching. Surprisingly, the smog and the smells were absent there.View Larger Map
Monday, May 19, 2008
26 elements have been added since 1923, when will it end?
The reDiscovery Institute is non-profit, public-policy think-tank located in Tacoma, Washington, with branches in Atlanta, Georgia and Fort Worth, Texas. The reDiscovery Institute fosters integration of science education with traditional Judeo-Christian principles of free market, limited government, property, faith, and corporal punishment.The best!
Sunday, May 18, 2008
Mary Ellen Park Photography
Mary Ellen Mark's documentary photography: 1987 - 1997 ... demonstrating the power of the art form. Check out the rest of the photos in the afterword, complete with a little story to set context. Very powerful.
Saturday, May 10, 2008
Thursday, April 24, 2008
Nuclear Explosions Since 1945
Victorian All-in-One PC
Monday, April 21, 2008
Sunday, April 20, 2008
Sunday, April 13, 2008
Drink Tap
Every year, 38 billion water bottles end up buried in the earth. Drink tap.
Sunday, April 06, 2008
Thursday, April 03, 2008
The Future of Africa
Labels:
Africa,
Photos,
Social Responsibility,
Travel
Subscribe to:
Posts (Atom)
