No, you don't have to confuse "more massive" with "bigger". The most massive star in the eta Carinae system may have 100 times the mass of the Sun and be dozens of times bigger than our star but it is far smaller than VY CMa.
VY CMa is a red supergiant that has swollen to an extremely large size due to shell burning of different layers on its last stages of life. VY CMa is a cool star. On the other hand eta Carinae is very hot and it is in a different evolutionary state.
It is so massive that it will never reach the red supergiant state because it is losing mass at a fast rate. Also the companion play a role and alters the evolution.
Eventually eta Car will become a WR star (a naked core) and explode as a supernova. The same fate is expected for VY CMa but since it has already become a rec supergiant it is very likely that it won't become a WR star. This shows that VY CMa is far less massive than eta Car.
Hypergiants are super luminous supergiants. It isn't all about sheer size. Eta Carinae is a hypergiant but it is smaller than the supergiant Antares. This is due to the fact that Eta Carinae is about 60 times as luminous as Antares and 10 times as massive. Although size doesn't matter, the largest star VY Canis Majoris is a Hypergiant.
Dwarf to giant then to supergiant Dwarf to giant then to supergiant the Largest Star in the Galaxy is VY Canis Majoris which sits in Canis Majoris or the greater dog. Along with the brightest star Sirius. There are follow up stars such as VW Cephi A (if my spelling is correct) and WOH G64. There are many others the are along this size. There are to many stars in our universe to start from beginning to end. The sun is NOT the biggest star in our universe, as of known the Eta Carinae is the biggest star yet.,acualy vy canis majoris is the largest star by far
Hot!
Eta Carinae is a stellar system in the constellation Carina.It is approximately 7,500 -> 8,000 light years from us.
Eta Carinae is a stellar system in the constellation Carina.It has a mass of about 100 -> 150 Suns. [See related question]
Eta Carinae is actually a star system comprising of at least two massive stars.Eta Carinae A: Has a diameter about 3.3 x 109Km (If replaced with the Sun it would extend to the orbit of Jupiter)Eta Carinae B: Is about half that of Eta Carinae AHowever, it is difficult to be precise as both stars are contained within the Homunculus Nebula and they are shedding material at around the mass of the Earth each day.
Eta Carinae.
Eta Carina is a dance band from Charlotte, North Carolina.Eta Carinae is a star system in the Carina constellation about 8,000 light years from our sun.
Alpha Canis Majoris - Sirius A & B (a double star system)Beta Canis Majoris - Murzim (also Mirzam, Mirza, among others)Gamma Canis Majoris - Muliphen (also Muliphein)Delta Canis Majoris - Wezen (also Wesen)Epsilon Canis Majoris - Adara (also Adhara)Zeta Canis Majoris - Furud (also Phurud)Eta Canis Majoris - Aludra
Eta Carinae is a luminous blue variable (LBV) variable star. It is at least a binary system. One day, it is expected to explode as a supernova - possibly in our lifetime.
Yes it is and will be so for quite a while.
Zeta Leonis Epsilon Canis Majoris Epsilon Tauri Eta Lyrae Gamma Andromedae Mu Lyrae Beta Virginis Pi Sagittarii Epsilon Aquarii Beta Cygni Alpha Corvi 80 Ursae Majoris