New NASA telescope to see invisible stars

I happened across this story this morning, Its a great tool to have in the arsenal, I cant wait for the WEBB space telescope to get up and flying, That one will see much deeper than Hubble ,

Is this the telescope that they're hoping to use to determine whether the hypothetical "Nemesis" star exists just outside the Oort cloud?

Its been delayed, Launch of space mapping satellite delayed: NASA WASHINGTON (AFP) NASA has delayed the launch of a space mapping satellite because of problems discovered in a rocket booster steering engine, the US space agency said Friday. The Wide-field Infrared Survey Explorer (WISE) was supposed to have been launched between 1409 and 1423 GMT Friday, atop a Delta II rocket, but it has been put back to Monday at the same time, the space agency said. "The first launch attempt scheduled for December 11 was delayed due to an anomaly in the motion of a booster steering engine," NASA said in a s... [More]

by "invisible stars" do they mean brown dwarfs?

by "invisible stars" do they mean brown dwarfs? It can refer to brown dwarfs (failed stars) or even very cool stars that are obscured by dust and it will also hunt down asteroids, I think the main mission purpose is to cataloug those cool stars and brown dwarfs for the most part because Nasa already has an asteriod hunter, an invisible star could very well refer to brown dwarfs

Looking forward to it.

It can refer to brown dwarfs (failed stars) or even very cool stars that are obscured by dust and it will also hunt down asteroids, I think the main mission purpose is to cataloug those cool stars and brown dwarfs for the most part because Nasa already has an asteriod hunter, an invisible star could very well refer to brown dwarfs ah i see! hoping there is a brown dwarf or maybe dwarfs outside the ort cloud. or is that impossible?