how many planet in unevers
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Eight....................
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Answer:
Age
4.568 billion years
Location
Local Interstellar Cloud, Local Bubble, Orion–Cygnus Arm, Milky Way
System mass
1.0014 Solar masses
Nearest star
Proxima Centauri (4.25 ly)
Alpha Centauri (4.37 ly)
Nearest known planetary system
Proxima Centauri system (4.25 ly)
Planetary system
Semi-major axis of outer known planet (Neptune)
30.10 AU
(4.5 bill. km; 2.8 bill. mi)
Distance to Kuiper cliff
50 AU
Populations
Stars
1 (Sun)
Known planets
8 (MercuryVenusEarthMarsJupiterSaturnUranusNeptune)
Known dwarf planets
2 universally accepted
(PlutoEris)
1 more likely to be
(Ceres)
2 more possible to be
(HaumeaMakemake)
Known natural satellites
575 (185 planetary390 minor planetary)[1][2]
Known minor planets
796,354[a][3]
Known comets
4,143[a][3]
Identified rounded satellites
19 (5–6 likely in hydrostatic equilibrium)
Orbit about Galactic Center
Invariable-to-galactic plane inclination
60.19° (ecliptic)
Distance to Galactic Center
27,000 ± 1,000 ly
Orbital speed
220 km/s; 136 mps
Orbital period
225–250 myr
Star-related properties
Spectral type
G2V
Frost line
≈5 AU[4]
Distance to heliopause
≈120 AU
Hill sphere radius
≈1–3 ly
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