when they and the shell of gas that surrounds them are known as planetary nebulae. In one of them, called WeSb 1, the scientists discovered that the brightness of the star occasionally flickered.

Helix Nebula, known as "Eye of God," illustrates a dying star's gas cloud; Hubble captured this stunning planetary nebula image.

This is the metadata section. Skip to content viewer section. ABSTRACT The planetary nebula M94‐20 in the Large Magellanic Cloud was serendipitously observed with the Space Telescope Imaging ...