Astronomy 1210 -- February 22, 2012 (15)
Important Topics from Last Time
Today's Key Topics
- Orbits, falling and weightlessness
- Artificial satellites and low-earth orbit
- Geostationary orbit
- Seeing artificial satellites for yourself
- Tides and the changing length of the day.
- Why only one side of the Moon is visible from Earth.
- Today: Cosmic PerspectiveSection 4.5
- Fasten your seat belts for a great sky show beginning tonight as the Moon reappears as a crescent in the western evening sky and Mercury makes a brief appearance.
- Look for the ecliptic in action with Mercury, Venus and Jupiter defining a line across the sky that will be followed by the Moon over the next several days.
- Look for Venus in the western evening sky (you can't miss it) and Jupiter high overhead in the early evening, now approaching Venus in the west day by day.
- Cassiopeia is the "W" of stars nigh overhead toward the North in the early evening.
Home - Notes - A - APOD - BA - SN - SW - ST - I - S - T - W - B
National Weather Service Current Forecast
Current location of the Wide Field Infrared Survey Explorer (WISE)