| 释义 |
R Coronae Borealis star R Coronae Borealis star[¦är kə¦rō‚nē ‚bȯr·ē′al·əs ‚stär] (astrophysics) A rare type of irregular variable star which has long periods of maximum brightness followed by a sudden, unpredictable reduction in brightness of several magnitudes, and a slower, sometimes erratic return to the original brightness. |