Mariner 9 Orbits Mars; First Spacecraft to Orbit Another Planet
November 14, 1971
NASA’s Mariner 9 reaches the planet Mars and becomes the first man-made object to orbit another planet. Mariner 8 was scheduled to be the first, however due to launch problems it failed to make it out of Earth’s atmosphere. The Soviet Mars 2 and Mars 3 space probes reached the planet on November 27 and December 2 respectively.
Mariner 9 completed its mission of photographing the surface of Mars, transmitting 7,329 images covering 100% of the planet’s surface. While out of fuel, Mariner 9 still orbits Mars to this day, expected to stay in orbit until about the year 2022 when it will enter the planet’s surface and either burn up or crash into the surface.
First Underwater Telegraph Cable
November 13, 1851
Laid by British telegraphic engineer John Watkins Brett and his brother Jacob Brett, the world’s first operational underwater telegraph cable opens for business. Connecting the English city of Dover to the French city of Calais, the cable was ran at the narrowest point of the English channel. With this link, communication between London and Paris was made possible.
Apple Passes $500 Billion Valuation
February 29, 2012
The stock value of Apple, Inc. surpasses $500 billion, setting a new record for the company which was already the world’s most valuable company at the time. This day marks a milestone on the historic run for the company from near-bankruptcy in the 1990’s to one of the most, if not the most, dominant technology company in recent history. Apple would later become the first company in history to surpass $700 billion in value in February 2015.
Tokyo Skytree Completed
February 29, 2012
Construction of the Tokyo Skytree broadcast tower, delayed two months due to the 2011 Japan earthquake and tsunami, is completed on leap day – February 29th, 2012. The Tokyo Skytree is the tallest structure in Japan and the world’s tallest tower.