... The bright stars above are well known as heart of the Trapezium, an open cluster of stars in the center of the Orion Nebula. ... The Regolith of Asteroid Eros . ... The Helix Nebula is the closest example of a planetary nebula created at the end of the life of a Sun-like star. ... Today we know this light was an exploding star and record the colorful expanding cloud as the Veil Nebula. ... In the heart of the Rosette Nebula lies a bright open cluster of stars that lights up the nebula. ...