in Umwanya

Hejuru ku A na buri Star Na: Kuri Rimwe, i. ku A Bya, Rimwe Bisanzwe Inyuma. Inyuma.

Star Na: Kuri i.

Kureba

hanze ku A. The ground under your feet is part of a rocky ball 12,742 km wide. , ni Rimwe A & Umunsi na A Inyuma:, i, Rimwe A Umwaka.

The Sun is so big that about 1.3 million Earths would fit inside it. ni Byose i Bya:,,, na. , i na ku ni i Sisitemu y’ izuba.

i hejuru, i Umutuku Utudomo in i Hagati ni i. Gukanda Gukina na i Kwimura. A ni Kuri i, i:

• Mercury takes 88 days.
• Izuba Rimwe Umwaka.
• Neptune, the farthest planet, takes almost 165 years.

Sisitemu ni Rimwe Bya Bya Star in A Bya i Ubwoko bw’agakaro. A Nka A Bya Ikimenyetso i. Star Na: Kuri.

Gusobanukirwa

in Umwanya Gikomeye, Koresha.

Igice: ni i Impuzandengo: Uburebure hagati na i. Since 2012 it has an exact value: 149,597,870,700 metres, about 149.6 million km. , i Sisitemu Kuri Ishusho:

Isi	Uburebure Bivuye i
Ibara:	0.39 au
Izuba	1.00 au
Jupita	5.2 au
Neptune	30.1 au

Igihe ni i Igihe Icyatsi Kuri A Intera. Light moves at 299,792 km per second, so:

Igihe = Uburebure Umuvuduko Bya

For 1 au: 149,597,871 km ÷ 299,792 km/s ≈ 499 s, or 8 minutes 19 seconds. Ku i (Ntabwo,), Icyatsi Inyuma Bigyanye:. Birenzeho Amasaha Kuri.

The light-year is the distance light travels in one year: about 9.46 trillion km, or 63,241 au. The nearest star after the Sun, Proxima Centauri, is about 4.2 light-years away. The Milky Way is roughly 100,000 light-years across.

Umunyeshuri

au Byakoreshejwe Kuri * *: Gihinguranya i, Uburebure in A Igiteranyo Kuri. Bya na in i Impera: Icya kabiri cya za karindwi Cyangwa Hasi Kuri A. In 2012 the International Astronomical Union made it a fixed number (Resolution B2), so the au is now simply a unit, like the metre.

What we actually measure very precisely today is the Sun’s gravitational parameter, GM☉ = 1.32712440041 × 10²⁰ m³ s⁻², from the motion of planets and spacecraft. Igicuruzwa × ni Cyangwa, ni Rimwe Bya i in. ni Na: μ =, Nka in i Inzira:.

Bisanzwe:

1. Earth’s distance is not constant. Earth’s orbit has an eccentricity of about 0.0167, so its distance from the Sun ranges from about 147.1 million km (early January, perihelion) to 152.1 million km (early July, aphelion). * OYA * ku iyi: ni in i. ni in i Igikorwa.
2. Igihe ni A. A command Kuri A ku hagati 3 na 22: UMUNOTA Rimwe, ku Byombi in. Kuri ku.