A theoretical astrophysicist may have solved a nearly two-decade-old mystery over the origins of an unusual 'zebra' pattern seen in high-frequency radio pulses from the Crab Nebula. A theoretical ...
IC 418 is a planetary nebula. The nebula shows the life cycle of a star. A star emits light like Taeyang, and nuclear fusion reactions occur at its center. As time passes, the nuclear fusion reactions ...