Conjunction of C/2017 O1 ASASSN1 and C/2015 ER61 PanSTARRS
![Conjunction of C/2017 O1 ASASSN1 and C/2015 ER61 PanSTARRS Conjunction of C/2017 O1 ASASSN1 and C/2015 ER61 PanSTARRS](https://cara.uai.it/sites/default/files/images/C2017O1_C2015ER61_Conjunction.jpg)
Two unusual spots are on the move in the sky. These spots are actually comets in our nearby Solar System that by chance wandered into the field of the light-years distant stars. On the far left is comet C/2017 O1 ASAS-SN, on the right is comet C/2015 ER61 PanSTARRS with a rather long tail to its right.