For Kenneth Chang's latest contributions to The Japan Times, see below:
The trajectory of Bennu is known precisely enough that the chances of collision are exactly zero for the next century. But the crystal ball becomes fuzzier in 2135.
After numerous missions by the United States and the Soviet Union to explore it in the 1970s, ’80s and ’90s, attention shifted elsewhere.
The chances of it hitting a populated area are small, but not zero. That has raised questions about how the country’s space program designs its missions.
Like the first flight of an airplane by Wilbur and Orville Wright, the flight did not go far or last long, but it showed what could be done.
An infrared telescope mounted inside a 747 jumbo jet showed unambiguous evidence of water on parts of the moon where the sun shines.
Scientists detected a chemical — phosphine — in the thick Venus atmosphere, and they assert that something now alive is the only explanation for its source.
Expo 2010 — a six-month event starting May 1 in Shanghai, the largest city in China — will showcase the recent economic development and internationalization of the world's most populous country, once a revolutionary nation that directly challenged the Western political and economic order. ...
