CVIndependent

Thu04272017

Last updateFri, 16 Sep 2016 12pm

Astronomy

31 Jul 2015
by  - 
Jupiter sets almost an hour after the sun on Aug. 1, and three minutes earlier each evening thereafter. Using binoculars a half-hour after sunset, look very low, about midway between west and west-northwest, to the left of the sunset point. If you can still find Jupiter on Aug. 5, try for Mercury, 1.9 degrees to its lower right. On Aug. 6, Mercury is 0.6 degrees to the upper right of Jupiter, and on Aug. 7, it is 1.4 degrees to Jupiter’s upper left. The solar system’s largest planet will be hidden for several weeks while it passes conjunction on the far side of the sun on Aug. 26. Meanwhile, Mercury makes a very low evening appearance, 4 degrees above the western horizon in mid-twilight (about 40 minutes after sunset) from Aug. 18 to Sept. 4, staying at magnitude 0 while shifting from 3 degrees north of west to 10 degrees…
30 Jun 2015
by  - 
Galileo, more than four centuries ago, observed and described phenomena you can witness in the evening sky this summer, including the phases of Venus, the moons of Jupiter, the Milky Way, details on the surface of the moon, and more. The Discoveries and Opinions of Galileo, a selection of the scientist’s writings translated by Stillman Drake, is fascinating reading. Venus and Jupiter are still easy to spot during evenings for most of July 2015, because they far outshine all nighttime stars. Venussinks lower in the evening sky in July while getting ever more interesting for telescopic observation: As Venus draws closer to Earth, it displays an ever thinner, more backlit crescent. Jupiter lingers close to Venus during the final weeks of their joint appearance in evening sky. First, Jupiter appears to right of Venus, by 0.6 degrees on July 1, and 1 degree on July 2. On July 4, they’re…
01 Jun 2015
by  - 
Venus and Jupiter in the west are closing toward a spectacular close pairing on June 30, while Saturn climbs in the southeast in the early evening. These three naked-eye planets, all showpieces for telescopic observation, should make a star party in June an exciting affair—so we hope you can arrange to attend one! Evenings: Venus and Jupiter are easy to spot until late July 2015, because they far outshine all nighttime stars. In June and July, Venus sinks lower in the evening sky while increasing in brightness and getting ever more interesting for telescopic observation: On June 6, Venus reaches greatest elongation, 45 degrees to the upper left of the setting sun; as seen through a telescope around that date, the planet appears as a tiny “half moon.” In the next 10 weeks, as Venus draws closer to Earth, it displays an ever thinner, more backlit crescent. Jupiter appears close…