Urutan pelanet di luar angkasa?

<p>A. Matahari &nbsp; = Matahari adalah bintang pusat tata surya, bukan planet, karena ia &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; menghasilkan cahayanya sendiri melalui fusi nuklir, sedangkan planet &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; (seperti Bumi) mengorbit Matahari, tidak menghasilkan energi &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; sendiri, dan tersusun dari batuan atau gas dingin.</p><p>1. Mercurius = planet terkecil dan terdekat dengan Matahari di tata surya kita, &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; terkenal karena ukurannya yang kecil (hampir seukuran Bulan Bumi) &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; dan orbitnya yang cepat, membuatnya menyelesaikan tahun dalam &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; sekitar 88 hari Bumi</p><p>2. Venus &nbsp; &nbsp; &nbsp; = planet kedua dari Matahari, sering disebut "kembaran Bumi" karena &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ukuran dan massanya mirip, tetapi memiliki kondisi ekstrem: planet &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; terpanas di Tata Surya karena atmosfer tebal CO2 memerangkap &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; panas (efek rumah kaca ekstrem), berawan asam sulfat tebal, tekanan &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; permukaan sangat tinggi, dan rotasi retrograd (berlawanan arah &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; jarum jam) yang sangat lambat, membuatnya tampak sangat terang &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;di langit malam dan dijuluki Bintang Kejora.&nbsp;</p><p>3. Bumi &nbsp; &nbsp; &nbsp; &nbsp;= planet ketiga dari Matahari, satu-satunya tempat di alam semesta &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;yang diketahui memiliki kehidupan, dijuluki "Planet Biru" karena air &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;menutupi 70% permukaannya dan memiliki atmosfer kaya oksigen &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;yang melindungi makhluk hidup.</p><p>4. Mars &nbsp; &nbsp; &nbsp; &nbsp; = planet keempat dari Matahari, dikenal karena warna karat besinya &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; dan memiliki musim, es kutub, serta fitur geologis seperti gunung &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; berapi dan ngarai, namun atmosfernya sangat tipis dan sebagian &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; besar karbon dioksida, menjadikannya dunia yang kering dan dingin</p><p>5. Jupiter &nbsp; &nbsp; &nbsp;= planet terbesar di tata surya, raksasa gas yang terdiri dari hidrogen &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; dan helium, dikenal dengan pita awan berputar dan badai raksasa &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; seperti Bintik Merah Besar (Great Red Spot), memiliki hari terpendek, &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; banyak bulan, dan cincin redup, serta dijuluki "pembersih tata surya" &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; karena gravitasinya melindungi Bumi dari objek berbahaya.&nbsp;</p><p>6. Saturnus &nbsp; &nbsp;= planet keenam dari Matahari, raksasa gas terbesar kedua di tata &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; surya, terkenal karena sistem cincinnya yang spektakuler terbuat dari &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; es dan batu, menjadikannya salah satu objek terindah di langit malam &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; yang bisa dilihat mata telanjang, serta memiliki ratusan bulan dan &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; atmosfer berangin kencang.</p><p>7. Uranus &nbsp; &nbsp; &nbsp;= planet ketujuh dari Matahari, termasuk kategori raksasa es, dikenal &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; karena kemiringan rotasinya yang ekstrem (hampir 90 derajat, &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; membuatnya tampak "berguling" ke samping).</p><p>8. Neptunus &nbsp; = planet kedelapan dan terjauh dari Matahari, dikategorikan sebagai &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<strong>raksasa es</strong> dengan warna biru khas karena gas metana, memiliki &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;badai hebat seperti Bintik Gelap Besar, musim yang sangat panjang &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;(40 tahun Bumi), dan merupakan planet padat pertama yang &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;ditemukan menggunakan perhitungan matematis sebelum teleskop.</p>