Mars is spinning faster and its days are getting shorter — and scientists aren't sure why

• Measurements from NASAs' InSight Mars Lander have uncovered a new Martian mystery. 
• The red planet seems to be spinning faster, making its days a little shorter every year.
• Scientists don't know why this may be happening but suspect it has to do with ancient ice. 

Our days on Earth may be getting longer, but on Mars, they are mysteriously getting shorter.