Are they now saying dark energy isn't dark?
The fact that it has an IR telescope to look for it implies they think it is bright but just in another part of the spectrum. Is it just another misnomer like dark side of the moon? Do they know they are going to see dark energy or do they need a new detector that can view negative frequencies.
The thing about dark energy is that it does your head in just as badly as solving Boltzman equations and finding that half of your RF sidebands are negative frequencies. Does that mean they go backwards intime and arrive at your reciever before you know you want to look for them? Maybe they will never see anything because all the dark energy being emitted now has already zipped past us billions of years ago.