Astrophysics, Cosmology & Relativity
2 terms
Nebula
Astrophysics, Cosmology & Relativity
Light-Years (Diameter)
An interstellar cloud of dust, hydrogen, helium, and ionized gases in space, serving as a site for star formation.
M_Jeans = (5 k_B T / (G μ m_H))^(3/2) (3 / (4 π ρ))^(1/2)
Neutron Star
Astrophysics, Cosmology & Relativity
M_☉ (Mass), km (Radius)
An ultradense stellar core remnant produced by the core-collapse supernova explosion of a massive star, composed almost entirely of neutrons.
M ≈ 1.4–2.1 M_☉, R ≈ 10–12 km, ρ ≈ 10¹⁷ kg/m³