Bryce Canyon National Park: Comet Neowise + Thor's Hammer
It's amazing to me that something only 5 kilometers (3 miles) in diameter, made up of only ice and rubble, can put on such a show with its dust and ion tails, and do this from over 64 million miles away (103 million km)!
The Yosemite Firefall at Horesetail Falls
Yosemite’s Fire Fall is a natural phenomena that only happens in late February when the light from the sunset hits the water from Horsetail Falls just right to make it appear that the water is on fire (pending other perfect conditions).