161.

Jupiter at perihelion Jupiter passes its orbit's closest point to the Sun. Tue, 15 Mar 2011 at 10:04 EDT (4,799 days ago) in Pisces

162.

Mars at perihelion Mars passes its orbit's closest point to the Sun. Wed, 09 Mar 2011 at 08:25 EDT (4,805 days ago) in Aquarius

163.

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. Thu, 17 Feb 2011 at 04:47 EDT (4,825 days ago) in Aquarius

164.

Mars at solar conjunction Mars is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Fri, 04 Feb 2011 at 11:03 EDT (4,838 days ago) in Capricornus

165.

Saturn enters retrograde motion Saturn reverses its direction of motion across the sky. Wed, 26 Jan 2011 at 01:10 EDT (4,847 days ago) in Virgo

166.

Mars at apogee Mars reaches its furthest point from the Earth, as it passes around the far side of the Sun. Fri, 07 Jan 2011 at 17:20 EDT (4,866 days ago) in Sagittarius

167.

Uranus ends retrograde motion Uranus returns to its usual eastward motion after opposition. Sun, 05 Dec 2010 at 22:01 EDT (4,899 days ago) in Pisces

168.

Jupiter ends retrograde motion Jupiter returns to its usual eastward motion after opposition. Thu, 18 Nov 2010 at 11:47 EDT (4,916 days ago) in Aquarius

169.

Neptune ends retrograde motion Neptune returns to its usual eastward motion after opposition. Sun, 07 Nov 2010 at 02:02 EDT (4,927 days ago) in Capricornus

170.

Saturn at solar conjunction Saturn is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Thu, 30 Sep 2010 at 20:32 EDT (4,965 days ago) in Virgo

171.

Uranus at opposition Uranus lies in the opposite direction to the Sun in the sky, making it optimally positioned to be observable for much of the night. Tue, 21 Sep 2010 at 12:50 EDT (4,974 days ago) in Pisces

172.

Jupiter at opposition Jupiter 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. Tue, 21 Sep 2010 at 07:28 EDT (4,974 days ago) in Pisces

173.

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 (4,975 days ago) in Pisces

174.

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 (5,006 days ago) in Capricornus

175.

Jupiter enters retrograde motion Jupiter reverses its direction of motion across the sky. Fri, 23 Jul 2010 at 07:49 EDT (5,034 days ago) in Pisces

176.

Uranus enters retrograde motion Uranus reverses its direction of motion across the sky. Mon, 05 Jul 2010 at 12:57 EDT (5,052 days ago) in Pisces

177.

Neptune enters retrograde motion Neptune reverses its direction of motion across the sky. Mon, 31 May 2010 at 13:52 EDT (5,087 days ago) in Aquarius

178.

Saturn ends retrograde motion Saturn returns to its usual eastward motion after opposition. Sun, 30 May 2010 at 14:34 EDT (5,088 days ago) in Virgo

179.

Mars at aphelion Mars passes the furthest point along its orbit from the Sun. Tue, 30 Mar 2010 at 18:23 EDT (5,149 days ago) in Cancer

180.

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 (5,158 days ago) in Virgo