[bigheadfred]

They are all around us. A couple of more in a few days. Not nearly as close. But still. IAS!

NASA-NEO

Too many "close ones" the last week of May.

[NormsRevenge]

There is speculation way out there that we periodically pass thru belts of stuff .. or mysterious bodies shoot off stuff in our direction..

What’s to keep a couple of them playing a little cosmic carom pool and whupping up some major crust and mantle .. It is 2012 ... hmmm

[Marine_Uncle]

As they approached earth, they realized who was residing in the White House and decided it best to just pass by.

[blam]

IAS

Astronomers Unravel A Mystery Of The Dark Ages

Undergraduates' work blames comet for 6th-century "nuclear winter" Scientists at Cardiff University, UK, believe they have discovered the cause of crop failures and summer frosts some 1,500 years ago – a comet colliding with Earth. The team has been studying evidence from tree rings, which suggests that the Earth underwent a series of very cold summers around 536-540 AD, indicating an effect rather like a nuclear winter.

[SunkenCiv]

Thanks bhf.