Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!linus!philabs!cmcl2!seismo!ut-sally!utastro!dipper From: dipper@utastro.UUCP (Debbie Byrd) Newsgroups: net.astro Subject: StarDate: March 2 Predawn Stargazing Message-ID: <450@utastro.UUCP> Date: Sun, 2-Mar-86 02:00:21 EST Article-I.D.: utastro.450 Posted: Sun Mar 2 02:00:21 1986 Date-Received: Tue, 4-Mar-86 03:12:06 EST Organization: U. Texas, Astronomy, Austin, TX Lines: 33 There's plenty to see in the predawn sky. We'll tell you about it -- after this. March 2 Predawn Stargazing Tomorrow morning before the sun comes up, you can see two planets and a bright star near Earth's companion moon. The planets are Saturn and Mars -- and the star is Antares, in the constellation Scorpius. All three are very nearly the same brightness. To tell them apart, you might look for the object which twinkles most -- that'll be the star. To tell Mars from Saturn, look at their colors. Mars is red. Saturn appears more golden. If you looked at these objects with a telescope, you might like Saturn best of all. A telescope shows Saturn as a golden ball encircled by a ring -- or if your telescope is large enough, and if the night is clear and still enough, by two rings. The apparent gap in the rings of Saturn is called Cassini's Division -- and it's actually about as wide as our Atlantic Ocean! What's more, it's not really a gap. Passing spacecraft have shown thin ringlets inside Cassini's Division -- they've also shown that what are seen in earthbound telescopes as two rings around Saturn are really hundreds of ringlets. So that's Saturn, Mars and the star Antares -- near the moon Monday morning. And by the way there's another solar system object in the predawn sky now -- Comet Halley -- back from its travels behind the sun. The comet is now low in the southeast before dawn -- and still best seen from a country location. Moonlight may interfere with the view in the morning -- but the moon is now waning -- and the best time to see Halley is nearly upon us. Stay tuned. Script by Deborah Byrd. (c) Copyright 1985, 1986 McDonald Observatory, University of Texas at Austin