‘Potentially hazardous’? An asteroid the size of the Space Needle will pass near the Earth on Tuesday Jeannie Owen 3 years ago The asteroid, known as 2021 KT1, is about 600 feet, the size of the New York Olympic Tower or the Seattle Space Needle. https://www.usatoday.com/story/news/nation/2021/05/31/nasa-warns-asteroid-expecting-pass-earth-june-1/5281064001/