If you're given that telescope a day early, you have a chance to see an asteroid fly past Earth this Christmas Eve. (Video via NASA)
The asteroid known as 2003 SD220 is almost a mile wide and racing at a relative velocity close to five miles per second.
Don't worry, though –– NASA says at its closest point, it'll still be 28 times the distance between Earth and the moon away from us. On the downside, you won't be able to see it with the naked eye.
And if you don't catch a glimpse of the Christmas Eve asteroid, you can sleep easy knowing this will be just its first of five appearances over the next 12 years.
This video includes images from Getty Images.