Today I see news articles everywhere on an asteroid that tagging along with the earth. I was hoping there would be a thread on the subject here. My questions are 1) What is it? 2) Why on earth (excuse the pun) haven't we noticed it until now!!! Is it new in earth's orbit? We are busy locating objects billions light years away, but an object on our orbit goes totally unnoticed??? 3) Is there any danger to earth from it? I have a feeling the answer is 'yes', even though many top astro-brains will assure us it is harmless.