Thursday evening August 24th the waxing crescent Moon passes by the outer gas giant planet Jupiter, and then on Friday evening August 25th the waxing crescent Moon passes by the gas-composed bluish-white star star Spica in the constellation Virgo the Harvest Maiden.
Monday August 21st the new Moon will be crossing the plane of the ecliptic moving north relative to the ecliptic. This is known as the ascending node, one of two intersections the Moon’s orbital path has with the ecliptic. The ecliptic is actually the Earth’s orbit and the Moon’s orbit is inclined about 6o from the ecliptic. So there are two node intersections, the ascending and descending nodes.
On August 21st the new Moon will be crossing the plane of the ecliptic at 10:34 UT (5:34 am CDT) within the constellation Leo the Lion. 8 hours later, at 18:30 UT (1:30 pm CDT), the Moon will reach new phase. This close timing between the new Moon phase and a node crossing means only one thing – eclipse!!
My eclipse viewing area will be at an Elementary School in the North Kansas City School District. From that location totality will be approximately 80 seconds. This short video showing totality for 80 seconds, was clipped and edited from a video shot during the November 2012 total solar eclipse viewed from Australia.
Read a bit more about this eclipse from a previous post.
Does our Moon actually go around the Earth as many graphics show? From our perspective on the Earth the Moon appears to circle around the Earth. However, in reality, the Moon orbits the Sun together with the Earth*
Read this very informative article about the Earth-Moon system and their orbital motions, written by Joe Hanson. “Do We Orbit the Moon?”
The Juno Spacecraft is now fully engaged in making its planned orbits around the outer planet Jupiter. Since arriving and orbital insertion the spacecraft has made 6 orbits around Jupiter sending back amazing images and advancing our knowledge of the planet and its role in the solar system.
Showing my age but I can remember how excited I was during the Voyager 1 and 2 flybys of the outer planets Jupiter, Saturn, Uranus, and Neptune during the 1980s. It was 40 years ago, Voyager 1 September 5th1977 – Voyager 2 August 20th 1977, when the spacecraft were launched. While both were targeted for a Jupiter and Saturn flyby Voyager 2 eventually had its mission rearranged so that it would fly past all four of the outer giant planets in a mission called the ‘Grand Slam’ or ‘Grand Tour’. The images from those flybys were just as exciting as the images we see from the current Juno mission albeit improved after 40 years of imaging technology advances.
So Where are the two Voyagers now? Click here to find out.
Click here to go to the NASA Video web site to see a short video (15 minutes) about the Voyager mission to the outer planets. This is part of a video series I often used in my Planetarium and classroom during the 1990s – so please realize that the graphics and animations, as well as some descriptions and some explanations are not necessarily as ‘advanced’ as things are now. However two of my heroes, Dr. Edward Stone, and Dr. Andrew Ingersoll, are featured making comments about some of the Science and discoveries.
Below is a well done video compilation of images taken by the Juno Spacecraft. Click here to go to the Vimeo web site for the original video.
Friday July 28th the 6-day old waxing crescent Moon will be within 2-3o from the outer planet Jupiter, and about 8-9o from the bluish star Spica in Virgo the Harvest Maiden. The Moon will be closest to Jupiter on the 28th and then closer to Spica on Friday the 29th.
With a 7×50 binoculars the Moon and Jupiter will easily fit within the field of view on the 28th, however the gap between Jupiter and Spica on the 29th will be just beyond that same field of view – as this animated graphic set for 2 days, 28th-29th, shows the view with 7×50 binoculars .
Tuesday July 11th two of the outer planets, Jupiter and Uranus, will be at heliocentric opposition. The two planets will be on opposite sides of the Sun and will be approximately 180o apart. Jupiter at 205o, and Uranus at 25o.
Earth is in this graphic but not as part of the heliocentric opposition. A few days ago Jupiter was at eastern quadrature.
On Thursday July 6th the position of the planet Jupiter with respect to the Earth and the Sun places the solar system’s largest planet at an orbital position called eastern quadrature. Jupiter is at a 90 degree angle from the Earth as this graphic shows. Think first quarter Moon as that is a fair comparison of the relative positions. At this position Jupiter follows the Sun across the sky from east to west as the Earth is rotating, meaning that Jupiter rises after the Sun and consequently sets after the Sun.
Where is Jupiter now? This graphic shows the sky at 10 pm CDT to include Jupiter high above the southwestern horizon and east from Leo the Lion and its bright star Regulus. Saturn is further east within a few degrees from the waxing gibbous Moon.
This is a short 6-7 minute video I made as part of a live musical performance called “Orbit” that was performed at the Gottleib Planetarium in Kansas City Missouri in May 2011. This is a piece from the much longer tour of the solar system performance and video and shows Jupiter, Saturn and some of their moons as viewed from the Cassini spacecraft.
Click here to go to the Qué tal in the Current Skies web site for more observing information for this month.