NASA is a user on You can follow them or interact with them if you have an account anywhere in the fediverse. If you don't, you can sign up here.
NASA @nasa

Sand dunes...on Mars! With an elongated crescent form, these "barchan dunes" are located near Nili Patera and are formed by the continuous action of the wind blowing in the same direction. Take a closer look: 

· tootbot · 1 · 0