Speaking of trifids, I've little trifid plants in my garden; some people call them Bittercress but I know they're triffids because I'd have a weed free section and the next thing I look around and it's populated by trifids (sorry, Bittercress). The only way they could have got there is by walking there because they're fully formed. None of this juvenile weed stage with them!
The APOD photos never cease to amaze me too. There are a few Flickr groups too - here is one of them. This is also worth a look too, although I struggle a little to navigate it