Confidence isn’t walking into a room with your nose in the air, and thinking you are better than everyone else, it’s walking into a room and not having to compare yourself to anyone else in the first place.

Unknown (via kryeveper)

Keeping this in my head- all the time, everytime.

(via whimsyjoyce)

The interplay between these new theoretical ideas and new high‐quality observational data has catapulted cosmology from the purely theoretical domain and into the field of rigorous experimental science. This process began at the beginning of the twentieth century, with the work of Albert Einstein.
Free chapter from Cosmology: A Very Short Introduction on the history of cosmology and how it extends from myth to science. This chapter is free until 25 September on Very Short Introductions Online. (via oupacademic)