Finding MU69’s Location in Space, Argentina 2017
Explanation: How do we know where our next object is? By watching it pass in front of distant stars. MU69 will cast a tiny star-shadow on Earth when it passes in front of a star from our vantage point. But, exactly where on Earth that shadow is cast is dependent on exactly where MU69 is on the sky. The NASA New Horizons mission sent teams across the planet over the last few years to wait for just such crossing events to help determine exactly where MU69 is in space. This picture was taken by Jack Jewel in Argentina in 2017. And just to make sure we didn’t forget why they were there, they spelled out the target in light while the Milky Way shines overhead.
Image credit: Jack Jewell