M57 is a ring of gas expanding outwards after being thrown off by a red giant star, that now glows faintly as a white dwarf, visible in the centre of the ring.
It is easy to find in the constellation Lyra and can be seen through small telescopes.
M57 is a ring of gas expanding outwards after being thrown off by a red giant star, that now glows faintly as a white dwarf, visible in the centre of the ring.
It is easy to find in the constellation Lyra and can be seen through small telescopes.