Explanation: Our solar system’s ruling giant planet Jupiter and 3 of its 4 large Galilean moons are captured in this single Hubble snapshot from January 24. Crossing in front of Jupiter’s banded cloud tops Europa, Callisto, and Io are framed from lower left to upper right in a rare triple-moon conjunction. Distinguishable by colors alone icy Europa is almost white, Callisto’s ancient cratered surface looks dark brown, and volcanic Io appears yellowish. The transiting moons and moon shadows can be identified by sliding your cursor over the image, or following this link. Remarkably, two small, inner Jovian moons, Amalthea and Thebe, along with their shadows, can also be found in the sharp Hubble view. The Galilean moons have diameters of 3,000 to 5,000 kilometers or so, comparable in size to Earth’s moon. But odd-shaped Amalthea and Thebe are only about 260 and 100 kilometers across respectively.
NASA’s New Horizons spacecraft returned its first new images of Pluto on Wednesday, as the probe closes in on the dwarf planet. Although still just a dot along with its largest moon, Charon, the images come on the 109th birthday of Clyde Tombaugh, who discovered the distant icy world in 1930.
psgurel – I’ve spent most of this week turning in my thesis and preparing for my defense next week. But today, I’m taking a break from all of that and repeating an experiment! Oftentimes, we must repeat experiments to prove that we are confident in our results. While it may not be thrilling to do the same experiment again, it is awesome when a result is reproducible! Today, I’m doing a similar kinetic experiment as I did on Sept 19th. Woohoo!
crestwind24 – Today one of the graduate students in my lab is defending her PhD. I love going to PhD talks, it is always fun and interesting to see the story that has developed with the training of a new scientist!! Last night and this morning I spent a bunch of time baking a cake for her in the form of a C. elegans. It is a chocolate cake with cream cheese pudding frosting! The green dots and lines represent the two neurons that she has studied in her thesis! Good Luck and Congrats to Dr. Pat!!
Happy Halloween!!!! Here at CauseScience we take Halloween very seriously. In fact, we are both traveling to Washington DC today for our annual Halloween get together with friends. Every year for awhile now we have picked a group costume… and rocked it! Although it is not really science-y at all, here are a few pictures of us from the last 3 years (#selfie… sort of).
Last year we did Peter Pan – CauseScience as Tiger Lily and Michael Darling!
Sesame Street… and apparently dancing Gangnam Style… CauseScience as Ernie and the Count!