On my day off...

Today, as I was sitting on the front porch (trying not to listen 'Rock on the Range'), I

-downloaded an app that told me, 'Yes, that light in the sky to the west is Venus',

-looked up Wikipedia to find out out those tiny little red bugs are 'clover mites',

-read a book (The Last Legends of Earth),

-grilled a steak (and used my new Weber Style 6434 Professional-Grade Vegetable Basket to grill some green peppers, red peppers and mushrooms )

and basically enjoyed my day off...

Picture is from Astronomy Picture of the Day

time dilation

Discovery that quasars don't show time dilation mystifies astronomers

The phenomenon of time dilation is a strange yet experimentally confirmed effect of relativity theory. One of its implications is that events occurring in distant parts of the universe should appear to occur more slowly than events located closer to us.

However, a new study has found that this doesn’t seem to be the case - quasars, it seems, give off light pulses at the same rate no matter their distance from the Earth, without a hint of time dilation.

from PhysOrg.com