TESS, the satellite launched by NASA last month that will search thousands of stars for Earth-like exoplanets, has just sent back its first test image. It’s just a quick one, not “science-quality,” but it does give you an idea of the scale of the mission: the area TESS will eventually document is 400 times the area covered by this shot.
What you see above is the star field around the constellation Centaurus; this 2-second exposure captured more than 200,000 stars. That’s just in one image from one of the four cameras on board; the Transiting Exoplanet Survey Satellite will employ all four during its mission, watching individual regions of space for 27 days straight over the course of two orbits.
Here’s a crop from the center:
Repeated high-resolution imagery of these…