The Heart and Soul Nebulae side by side in Cassiopeia. Credit: John Corban&the ESA/ESO/NASA Photoshop FITS Liberator
My heart is in hard science and I uphold until death that space saves lives. If you cannot imagine that without some help you can take a quick look at one example from NASA spin-offs that literally helps hearts pumping. An that is just one example. There are many more and you can read about general aspects and get more examples in How Hard Science Saves Lives.
The Heart nebula IC 1805 in Cassiopeia painted with a Hubble palette by Terry Hancock from Down Under Observatory. This nebula is an emission nebula showing glowing gas and darker dust lanes and you'll find it 7500 light years away from Earth.
My Valentine goes to hard science and space!