Welcome to . Starry Monday at Otterbein. Astronomy Lecture Series -every first Monday of the month- March 3, 2008 Dr. Uwe Trittmann. Todayâ€™s Topics. Recent Advances in Astronomy â€“ Part III The Night Sky in March. Recent Advances in Astronomy: Data. Exoplanets discovered
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Mercury Earth Jupiter
(Actually, it took Prof. Einstein 10 years to come up with that!)
Rμν -1/2 gμνR = 8πG/c4 Tμν
OK, fine, but what does that mean?
“Space tells matter how to move”
“Fields tell charges how to move”
Mass vs. Expansion
And we can even calculate who wins!
DensityCurvature2-D exampleUniverseTime & Space
0>1 positive sphere closed, bound finite
0=1 zero (flat) plane open, marginal infinite
0<1 negative saddle open, unbound infinite
It’s a tie!
Typical observing hour, early February
Celestial North Pole – everything turns around this point
Zenith – the point right above you & the middle of the map
Auriga & Taurus
with Plejades and the Double Cluster
(this is a Monday )