181.

Jupiter at perigee Jupiter reaches its closest point to the Earth – marking the best time to observe it in 1970. Mon, 20 Sep 2010 at 17:19 EDT (5,003 days ago) in Pisces

182.

Neptune at opposition Neptune lies in the opposite direction to the Sun in the sky, making it optimally positioned to be observable for much of the night. Fri, 20 Aug 2010 at 05:58 EDT (5,034 days ago) in Capricornus

183.

Jupiter enters retrograde motion Jupiter reverses its direction of motion across the sky. Fri, 23 Jul 2010 at 07:49 EDT (5,062 days ago) in Pisces

184.

Uranus enters retrograde motion Uranus reverses its direction of motion across the sky. Mon, 05 Jul 2010 at 12:57 EDT (5,080 days ago) in Pisces

185.

Neptune enters retrograde motion Neptune reverses its direction of motion across the sky. Mon, 31 May 2010 at 13:52 EDT (5,115 days ago) in Aquarius

186.

Saturn ends retrograde motion Saturn returns to its usual eastward motion after opposition. Sun, 30 May 2010 at 14:34 EDT (5,116 days ago) in Virgo

187.

Mars at aphelion Mars passes the furthest point along its orbit from the Sun. Tue, 30 Mar 2010 at 18:23 EDT (5,177 days ago) in Cancer

188.

Saturn at opposition Saturn lies in the opposite direction to the Sun in the sky, making it slightly closer, brighter and larger than at other times. It is also optimally positioned to be observable for much of the night. Sun, 21 Mar 2010 at 20:29 EDT (5,186 days ago) in Virgo

189.

Uranus at solar conjunction Uranus is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Wed, 17 Mar 2010 at 02:40 EDT (5,190 days ago) in Pisces

190.

Mars ends retrograde motion Mars returns to its usual eastward motion after opposition. Wed, 10 Mar 2010 at 12:08 EDT (5,197 days ago) in Cancer

191.

Jupiter at apogee Jupiter reaches its furthest point from the Earth, as it passes around the far side of the Sun. Sun, 28 Feb 2010 at 08:55 EDT (5,207 days ago) in Aquarius

192.

Jupiter at solar conjunction Jupiter is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Sun, 28 Feb 2010 at 05:33 EDT (5,207 days ago) in Aquarius

193.

Neptune at solar conjunction Neptune is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Sun, 14 Feb 2010 at 18:10 EDT (5,221 days ago) in Capricornus

194.

Mars at opposition Mars lies in the opposite direction to the Sun in the sky, making it closer, brighter and larger than at other times. It is also optimally positioned to be observable for much of the night. Fri, 29 Jan 2010 at 14:37 EDT (5,237 days ago) in Cancer

195.

Mars at perigee Mars reaches its closest point to the Earth – marking the best time to observe it in 1970. Wed, 27 Jan 2010 at 13:55 EDT (5,239 days ago) in Cancer

196.

Saturn enters retrograde motion Saturn reverses its direction of motion across the sky. Wed, 13 Jan 2010 at 10:29 EDT (5,253 days ago) in Virgo

197.

Mars enters retrograde motion Mars reverses its direction of motion across the sky. Sun, 20 Dec 2009 at 08:25 EDT (5,277 days ago) in Leo

198.

Uranus ends retrograde motion Uranus returns to its usual eastward motion after opposition. Tue, 01 Dec 2009 at 16:36 EDT (5,296 days ago) in Aquarius

199.

Neptune ends retrograde motion Neptune returns to its usual eastward motion after opposition. Wed, 04 Nov 2009 at 14:31 EDT (5,323 days ago) in Capricornus

200.

Jupiter ends retrograde motion Jupiter returns to its usual eastward motion after opposition. Tue, 13 Oct 2009 at 00:31 EDT (5,345 days ago) in Capricornus