Credits: NASA/Bill Ingalls
Have you noticed two bright objects in the sky getting closer together with each passing night? It’s Jupiter and Saturn doing a planetary dance that will result in the Great Conjunction on Dec. 21. On that day, Jupiter and Saturn will be right next to each other in the sky – the closest they have appeared in nearly 400 years!
Credits: NASA/JPL-Caltech
For those who would like to see this phenomenon for themselves, here’s what to do:
Find a spot with an unobstructed view of the sky, such as a field or park. Jupiter and Saturn are bright, so they can be seen even from most cities.
An hour after sunset, look to the southwestern sky. Jupiter will look like a bright star and be easily visible. Saturn will be slightly fainter and will appear slightly above and to the left of Jupiter until December 21, when Jupiter will overtake it and they will reverse positions in the sky.
The planets can be seen with the unaided eye, but if you have binoculars or a small telescope, you may be able to see Jupiter’s four large moons orbiting the giant planet.
Credits: NASA/Bill Dunford
Saturn and Jupiter are easy to see without special equipment, and can be photographed easily on DSLR cameras and many cell phone cameras. Here are a few tips and tricks:
These planets are visible in the early evening, and you’ll have about 1-2 hours from when they are visible, to when they set. A photo from the same location can look completely different just an hour later!
Using a tripod will help you hold your camera steady while taking longer exposures. If you don’t have a tripod, brace your camera against something – a tree, a fence, or a car can all serve as a tripod for a several-second exposure.
The crescent Moon will pass near Jupiter and Saturn a few days before the conjunction. Take advantage of it in your composition!
Get more tips HERE.
Our NASA expert answered questions from social media on an episode of NASA Science Live on Thursday, Dec. 17. Watch the recording HERE.
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@maejemison fist black woman in space and principle of the 100 Year Starship Project. #WomeninScienceBook #scientificliteracy #happyblackhistorymonth #blackhistoryshouldbecelebratedallyearlong
Bonsai!!
The Most Beautiful Bonsai Trees Ever.
Hitachi Seaside Park, Japan.
Mitosis vs meiosis comparison? There’s a GIF for that. (⌐■_■)
Be sure to check out all our science GIFs here for your studyblrs, teacher websites, presentations, or general amusement! Just please keep our name on there and don’t sell them! :D
“Pauta do Congresso agora é vingança contra MP e Judiciário”, diz procurador - O Antagonista
Over geological timescales – on the order of millions of years – even hard substances like rock can flow like a fluid. Heat from the Earth’s core drives convection inside our mantle, and that fluid motion ultimately drives the plate tectonics we experience here at the surface. But most other planetary bodies, including those with mantle convection similar to ours, don’t have a surface that shifts like our tectonic plates. Mars and Venus, for example, have solid, unmoving surfaces. The images above provide a peek at what goes on beneath. The upper image shows a simulation of mantle convection inside Mars over millions of years. The lower image is a timelapse of dye convecting through a layer of glucose syrup being heated from below. Notice how both examples show evidence of convective cells and plumes that help circulate warm fluid up and colder fluid downward. (Image credit: Mars simulation - C. Hüttig et al, source; N. Tosi et al., source; submitted by Nicola T.)
https://www.youtube.com/watch?v=epSzKZBkVG4&feature=share