In case you need something completely uncontrollable to worry about

Binary ‘deathstar’ has Earth in its sights | COSMOS magazine:

Astronomers at the University of Sydney, in Australia, first discovered the unusual and beguilingly beautiful star system eight years ago in the Constellation Sagittarius. One member of the pair is a highly unstable star known as a Wolf-Rayet, thought to be the final stage of stellar evolution to precede a cataclysmic supernova explosion. “When it finally explodes as a supernova, it could emit an intense beam of gamma rays coming our way”, said Peter Tuthill, lead researcher of the team that report their findings in the current Astrophysical Journal.

Or it might not. Or it might already (according to an appropriately positioned observer) have happened.

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s


%d bloggers like this: