The zodiac is a belt of 13 constellations that straddle the sky. Within this belt lie the apparent paths of the Sun, the Moon, and the planets. Learn more about the Zodiac
Today in 1970 the Soviet mission Venera 7 landed on Venus. It first took atmospheric readings before landing on the surface. This mission confirmed that humans could not survive on Venus. Learn more about Venus.
On this date in 1546, Tycho Brahe was born. The observations made by this astronomer helped support a sun centered model of the solar system. During his life Brahe cataloged over 1000 stars. Learn more about Tycho Brahe.
For many St. Louisans, the big red bow and ribbon going up around the James S. McDonnell Planetarium symbolizes the official start of the holiday season. What many people don’t know about this tradition is that it actually began as a prank. On December 17, 1966, 15 to 20 students from the Washington University in… Continue reading
Image by: Asim Patel [CC BY-SA 3.0], from Wikimedia Commons The Geminid meteor shower peaks tomorrow. This is one of the best meteor showers each year producing roughly 120 meteors per hour at their peak. Your best chance to see them will be tonight into tomorrow morning. Learn more about the Geminids.
Tonight if you look south around 6pm you will find a bright red object that does not twinkle; this is Mars. A little to the west of Mars will be a waxing crescent moon. Learn more about the Mars Exploration Program.
This is the Saint Louis Science Center’s NIGHT SKY UPDATE for the week of Tuesday, December 11. Times are given as local St. Louis time in Central Standard Time due to the time change coming this Sunday. For definitions of terminology used in the night sky update, click the highlighted text. Information updated weekly or… Continue reading
On this date in 1972 The Apollo 17 mission landed on the moon in the Tauris-Littrow valley. This site in on the southeast edge of Mare Serenitatis. Learn more about Apollo 17
Believe it or not the Earth is closer to the sun during the winter season but because of the tilt of Earth’s axis we receive less direct sunlight making it cold in the northern hemisphere. Learn about Axial Tilt.
Sirius is the brightest star we see at night. It rises around 9pm and is found southeast of Orion’s Belt. Sirius is a double star. If you have a telescope you may be able to find this faint companion. Learn more about Sirius.