Star dust A new study using observations by NASA's Spitzer Space Telescope reports for the first time that silica — one of the most common minerals found on Earth — is formed when massive stars explode. 21 Novembre 2018 https://www.instagram.com/p/Bqc-Rm7B1_D/ Lire la suite
Gibbous Moon beyond Swedish Mountain 19 Novembre 2018 https://www.instagram.com/p/BqWgLU7BHUO/ Lire la suite