An international partnership has designed a wooden satellite scheduled to be jointly launched by the Japanese space agency (JAXA) and NASA sometime next year.
To avert what could be the biggest postwar crisis for Japan's security environment, the country needs a robust security strategy, including collective defense.
Ancient records of solar eclipses show how the Earth's rotation has altered. To find total solar eclipses, historians combed through texts from the fourth century.
Accounts of total solar eclipses throughout history can reveal how Earth s rotation has changed. Newfound documents may prompt a rethinking of the planet s motion as far back as the fourth century.