I'm a geochemist. In the past ten years I've fixed mass spectrometers, blasted sapphires with a laser beam, explored for uranium in a nature reserve, and measured growth patterns in fish ears, and helped design the next generation of the world's most advanced ion probe. My main interest is in-situ mass spectrometry, but I have a soft spot in my heart for thermodynamics, drillers, and cosmochemistry.
Here are all the terrestrial planets (incl. moon), visible in the dawn sky from now until the new moon. And because it is the winter solstice, you don't even need to get up early to see them. But you only have a day or two left!
Click to enlarge if you want to see Mercury and Mars.