Sagittarius A* Traditional Cache

I wanted this cache to be space themed, so I politely ask that you add only space themed stuff.  I grew up as a scifi freak who loved Star Wars and Startrek.  I've always been fasinated with outerspace. The size and complexity of the universe has always left me in awe.  In fact making it there is on my bucket list.  So, this cache is a nod to our amazing universe and all the people who one day hope to explore the galaxy looking for class: M planets that might be hosting intelligent midichlorians and then using a tesseract to bring them back.