The Hubble Telescope
I have a deep love for the Hubble telescope. It started it's career while I was in high school, but it wasn't until later that I discovered it's amazing images of space. Seriously, they are gorgeous! Thanks to Hubble, I feel like space is this place filled with wonderful playgrounds waiting to be discovered. Watch this video about it's history, and then spend hours browsing the HubbleSite galleries.
The Higgs Boson
Even the simplest explanation is complicated. What is the Higgs Field really? Right now it's in the same category as black holes. We know they exist, we can see evidence that they are there, we know things about them, but we have not reached a complete understanding of how they work or why. The explorer in me loves there are still unanswered questions out there.
Click on the link to visit other participants in the A to Z Challenge. I'm currently #691