T Coronae Borealis (T CrB), popularly known as the "Blaze Star," is surely on the verge of a rare and dramatic brightening.

Lunar sunset as seen ... which Blue Ghost caught Friday before concluding its mission and going dark. Blue Ghost touched down on the Moon earlier this month after roughly six weeks of travel.

The solar-powered Blue Ghost went dark on Sunday evening (March ... that measures how dust behavior changes after sunset." "Ghost Riders in the Sky" was part of a wave of private moon exploration.