First Man-Made Object to Leave Solar System
June 13, 1983
The NASA space probe Pioneer 10 crosses the orbit of Neptune, becoming the first man-made object to leave the Solar System. It was launched on March 2, 1972 toward the red star Aldebaran, which forms the eye of the constellation Taurus. The last contact with Pioneer 10 was on January 23, 2003.
Launch of Venera 4
June 12, 1967
The Soviet probe Venera 4 is successfully launched. On October 18, 1967, it will enter Venus’ atmosphere where it will become the first space probe to successfully return atmospheric data from another planet.
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.