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)
F-Type Star
Star Classification: F
Luminosity Classification: V
Temperature (K) : 7000
Mass: 1.04–1.4 M☉ (main-sequence)
Elemental Composition: Hydrogen, Helium, iron, magnesium
Description: Yellow-White Stars with many metallic spectral lines. Slightly hotter and more massive than the Sun.
Birth: Collapse of medium-mass gas clouds
Life: Yellow-white stars with stable hydrogen fusion
☠️ Death: Red giant phase
Reincarnation: White dwarf
Example: Procyon A, Gamma Virginis
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)
