Ad Astra
M☉ Notation
Unit of measurement in
astronomy called the solar mass.
- M stands for Mass
- ☉ Astronomical Symbol/Sun
- 1 M☉, Benchmark unit
- Equal to mass of our Sun
The Sun
(NASA/ESA)
Spirograph Nebula
(NASA/ESA)
Hourglass Nebula
(NASA/ESA)
T-Type Brown Dwarf
Star Classification: T
Luminosity Classification: Low (Magenta)
Temperature (K) : 1000
Mass: 22–62.1 Jupiter masses, or below 0.075 M☉
Elemental Composition: Methane, water vapor
Description: Cooler brown dwarfs with strong methane absorption, faint in visible light.
Birth: Low-mass object unable to sustain fusion
Life: Methane-rich atmosphere; very cool
☠️ Death: Cools forever
Reincarnation: True Death (That's cold)
Example: Gliese 229B
Luminosity Classes
Added to spectral types.
Indicates size & brightness:
- 0 or Ia+: Hypergiants
- I (Ia, Ib): Supergiants
- II: Bright Giants
- III: Regular Giants
- IV:Subgiants
- V: Main Sequence
- VI (sd): Subdwarfs
- D (VII): White Dwarfs
Galaxy in Orange
(Wiki Images)
Wolf-Rayet Star
(NASA/ESA)
Planetary Nebula (PN K 4-55)
(NASA/ESA)
