On this day in 2004 – January 25th – the Mars rover Opportunity landed on the red planet.
The mission was designed to last 90 Martian days, but it was operational until the summer of 2018 when an exceptionally severe dust storm blanketed Mars for three months. The rover didn't recover from the loss of power, and the mission was officially brought to an end in February 2019.
On this day in 1736 – January 25th – French mathematician Joseph Lagrange was born.
Lagrange was one of the great minds of the 18th century, and his work included major contributions to physics and astronomy. He's best known now for his identification of equilibrium points between the gravity of the Earth and that the Sun. NASA's SOHO (Solar and Heliospheric Observatory) sits at one of these points.
On this day in 1994 – January 25th – Clementine was launched.
Over a period of nearly four months the US spacecraft Clementine made scientific observations of the Moon. In addition, the craft was used to test the effects on sensors and components of extended exposure to space.
Angie, it has the makings of a joke, but pedant that I am (aka a spoilsport), I need to point out that it takes the Moon 29 days to go around the Earth and we call it a month, which doesn't work very well. :)
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