4.5 billion years
5.5 billion years
6.5 billion years
7.5 billion years
- Our solar system is located in the Milky Way, a barred spiral galaxy with two major arms, and two minor arms.
- Our Sun is in a small, partial arm of the Milky Way called the Orion Arm, or Orion Spur, between the Sagittarius and Perseus arms.
- Our solar system orbits the center of the galaxy at about 515,000 mph (828,000 kph). It takes about 230 million years to complete one orbit around the galactic center.
- The solar system also includes the Kuiper Belt that lies past Neptune’s orbit. This is a ring of icy bodies, almost all smaller than the most popular Kuiper Belt Object – dwarf planet Pluto.
- Our solar system formed about 4.6 billion years ago from a dense cloud of interstellar gas and dust. The cloud collapsed, possibly due to the shockwave of a nearby exploding star, called a supernova. When this dust cloud collapsed, it formed a solar nebula – a spinning, swirling disk of material.
- At the center, gravity pulled more and more material in. Eventually, the pressure in the core was so great that hydrogen atoms began to combine and form helium, releasing a tremendous amount of energy. With that, our Sun was born, and it eventually amassed more than 99% of the available matter.
- Matter farther out in the disk was also clumping together. These clumps smashed into one another, forming larger and larger objects. Some of them grew big enough for their gravity to shape them into spheres, becoming planets, dwarf planets, and large moons. In other cases, planets did not form: the asteroid belt is made of bits and pieces of the early solar system that could never quite come together into a planet. Other smaller leftover pieces became asteroids, comets, meteoroids, and small, irregular moons.
If you are interested in preparing for the CSS MPT and other FPSC, SPSC, and PPSC General Recruitment Tests with us, get in touch with us.
Related MCQs
- Phosphorus helps plant growth of? (CSS 2017 General Science & Ability Paper)
- Leaves
- Seeds
- Root
- None of these
Submitted by: CSS Exam Desk Team
- The biggest planet in our solar system is? (CSS 2013 General Science & Ability Paper)
- Venus
- Pluto
- Jupiter
- Uranus
Submitted by: CSS Exam Desk Team
- After Demise of Hazart Khadija (رضی اللہ عنہا) With Whom Prophet (صلی اللہ علیہ وسلم) Married? (CSS 2018 Islamic Studies Paper)
- Hazart Hafsa(رضی اللہ عنہا)
- Hazart Sawda(رضی اللہ عنہا)
- Hazrat Umm-E-Habeeba(رضی اللہ عنہا)
- Hazrat Safia(رضی اللہ عنہا)
Submitted by: CSS Exam Desk Team
- One Units system was abolished in? (CSS 2019 Pakistan Affairs Paper)
- 1948
- 1970
- 1971
- None of these
Submitted by: CSS Exam Desk Team
- Rearing of honey bees for honey production is Called? (CSS 2015 General Science & Ability Paper)
- Sericulture
- Apiculture
- Viticulture Bees culture
- None of these
Submitted by: CSS Exam Desk Team
- In which area Man-o-Salwa (food from Heavens) Was given to Bani- Israel? (CSS 2022 Islamic Studies Paper)
- Makah
- Desert of Sinai
- Medina
- None of these
Submitted by: CSS Exam Desk Team
- Musharraf won the vote of confidence on? (CSS 2019 Pakistan Affairs Paper)
- 1 January , 2004
- 3 March, 2002
- 1 February , 2004
- None of these
Submitted by: CSS Exam Desk Team
- The longest Surah of the Quran is? (CSS 2010 Islamic Studies Paper)
- Surah al Baqarah
- Surah al Imran
- Surah al Tauba
- Surah Yunus
Submitted by: CSS Exam Desk Team
- Name the 8th months of Islamic Calendar? (CSS 2010 Islamic Studies Paper)
- Rabi-ul-Awal
- Rajab
- Ramzan
- Shaban
Submitted by: CSS Exam Desk Team
- The SYNONYM of the word \"PHILANDERING\" is? (CSS 2015 English Precis & Composition Paper)
- Belittle
- Spending
- Womanizing
- Exaggerating
Submitted by: CSS Exam Desk Team
- Who was the second Governor-General of Pakistan? (CSS 2019 Pakistan Affairs Paper)
- Khawaja Nazimuddin
- Ghulam Muhammad
- Iskandar Mirza
- None of these
Submitted by: CSS Exam Desk Team
- Ara’ayta ارايتmeans? (CSS 2014 Islamic Studies Paper)
- Denying
- The system
- You See (107:1)
- None of these
Submitted by: CSS Exam Desk Team
- The usual raw material for ceramics, generally found beneath the top soil is? (CSS 2011 General Science & Ability Paper)
- Silt
- Clay
- Sand
- Plaster of Paris
Submitted by: CSS Exam Desk Team
- Hazrat Ali (کرم اللہ تعالٰی وجہہ الکریم) changed the capital of Madinah to which city? (CSS 2023 Islamic Studies Paper)
- Kufa
- Basrah
- Babylon
- Damascus
Submitted by: CSS Exam Desk Team
- The SYNONYM of the word \"BIPARTISAN\" is? (CSS 2008 English Precis & Composition Paper)
- Divided
- Progressive
- Narrow -minded
- Representing two parties
Submitted by: CSS Exam Desk Team
- Science attempts to? (CSS 2012 General Science & Ability Paper)
- Explain how the universe works by discovering the laws regulating everything around us
- Use discovered laws to engineer new devices
- Both of these provided options
- None of these given options
Submitted by: CSS Exam Desk Team
- The planet of the solar system which has maximum number of Moon is? (CSS 2011 General Science & Ability Paper)
- Jupiter
- Venus
- Saturn
- Uranus
Submitted by: CSS Exam Desk Team
- Baznama (The Book Falconry) was authored by? (CSS 2020 Pakistan Affairs Paper)
- Hamza Shinwari
- Abdul Ghani Khan
- Abdul Rahman baba
- Khushal Khan Khattak
Submitted by: CSS Exam Desk Team
- An index that estimates the true rate of exchange among currencies is called? (CSS 2013 Current Affairs Paper)
- Human Development Index
- Exchange Rate
- Purchasing Power Parity
- None of these
Submitted by: CSS Exam Desk Team
- Had –e- Qazaf (false Accusation) is? (CSS 2009 Islamic Studies Paper)
- 50 Lashes
- 70 Lashes
- 80 Lashes
- None of these
Submitted by: CSS Exam Desk Team
- Yerevan is capital of which country? (CSS 2018 Current Affairs Paper)
- Armenia
- Azerbaijan
- Baku
- None of the above.
Submitted by: CSS Exam Desk Team
- Arachnophobia is refer to a fear of? (CSS 2012 General Science & Ability Paper)
- Bats
- Spiders
- Snakes
- None of these
Submitted by: CSS Exam Desk Team
- Which surah in the Qur’an does not have Bismillah at the beginning? (CSS 2023 Islamic Studies Paper)
- Surah 36. Yasin
- Surah 27. An-Naml
- Surah 09. At-Taubah
- None of these options
Submitted by: CSS Exam Desk Team
- SALT-Il treaty was singed in? (CSS 2020 Current Affairs Paper)
- 1979
- 1980
- 1989
- None of these
Submitted by: CSS Exam Desk Team
- _________ is viral waterborne disease? (CSS 2020 General Science & Ability Paper)
- Typhoid
- Cholera
- Hepatitis A
- None of these
Submitted by: CSS Exam Desk Team