January 4th
Earth at Perihelion
The Earth will be at its closest point to the Sun on January 4th during its yearly orbit around the Sun.
On This Day
January 4th 1959
Luna 1 was the first space craft to fly past by the Moon
The Russian spacecraft Luna 1 was the first probe to travel past the Moon. It was designed to crash into the Moon but due to on-board problems it missed the Moon by about 6,000km.
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