ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

How Old is Earth

Updated on May 8, 2015
How old is Earth
How old is Earth

What is Earth's Age?

The short answer - 4.54 Billion years. Expect this number to remain roughly the same for the remainder of our relatively short lifetime. Planet earth is the third planet closest to the Sun in this solar system, sitting at the edge of the Milky Way galaxy. The naming of the Milky Way comes from its appearance as a dim, milky color across the evening sky. This is a spiral galaxy, rotating around a central core.

How old is the Solar System?

Our solar system within the Milky Way galaxy is approximately 4.6 billion years old - as currently estimated by scientists, based on a study of meteorites. The solar system containing earth formed by the gravitational collapse of a molecular cloud, based on theory. A molecular cloud, also known as a stellar nursery, is a type of interstellar cloud, capable of forming into a variety of space objects, such as a star or solar system such as our own.

What is contained within our solar system?

Our solar system contains a Sun, eight planets (no more pluto!) and a series of interstellar noise, including a large asteroid belt and other smaller objects. At the center of the solar system sits the sun, with the gravitational attraction necessary to hold all other objects within this system in orbit. The planets, from closest to furthest from the sun are as follows:

  • Mercury
  • Venus
  • Earth
  • Mars
  • Jupiter
  • Saturn
  • Uranus
  • Neptune

Sitting in between Mars and Jupiter lies the asteroid belt, theorized to have once been a planet named Phaeton, which erupted thousands of years ago, though there are other theories out there.

Milky Way Galaxy
Milky Way Galaxy

How old is the Milky Way?

The Milky Way galaxy is theorized to be 13.2 billion years in age, roughly three times as old as our planet and solar system. It is estimated to have formed shortly after the creation of the universe, hypothesized to be the big bang.

What is contained in the Milky Way?

The Milky Way galaxy contains over 300 billion stars. and at least 100 billion planets. Many of these stars are capable of holding around them, a solar system much like our own. To put that in perspective, there can be approximately 10 billion brothers to our planet in this galaxy alone.

This galaxy contains stars, solar systems, planets and space clouds. At the core of the galaxy sits the highest concentration of stars. At about 40,000 light years from the center, the concentration of stars significantly drops with distance, until we hit our location - at the very edge of the galaxy.

Horsehead Nebula - The Universe
Horsehead Nebula - The Universe

How old is the Universe?

The Universe is theorized to be 13.82 billion years old, as estimated by one of our spacecraft post 2000. This says that our galaxy, and potentially all galaxies have formed around the time of the creation of the Universe.

As we expand further and further from home, our estimations become more and more difficult to predict. The creation of the Universe is still a widely debated topic, crossing fields from astronomy to religion and philosophy. One new theory - biocentrism - proposes the idea that it is consciousness which has created the Universe in the first place. The same consciousness that is ourselves, leading some to believe we are all as old as the Universe.

What is contained within the Universe?

The Universe contains millions upon millions of galaxies, each unique in size, dimension, location and make-up. There are also vast amounts of cosmic energy - nebulas, clouds, and other forms of space debris. There is truly a lot out there, and much left to be explored by us. A unique concept of our Universe is that it is constantly expanding - that is more and more space is created on a consistent basis. It seems this Universe does not have an edge!

Hopefully you've gained some perspective on the age of our planet relative to the Universe, and the exact location of our daily existence in relation to all that is out there. Hopefully this article has answered some questions, but I'm sure it has drummed up some more.

Looking to learn more? Check out the below video from Professor Michio Kaku, one who is at the cutting edge of science. Michio Kaku has given talks not only on the Universe, but the future of health and science in an intriguing way, backed by the latest scientific theories which baffle the mind.

If given the opportunity, would you ever travel to outer space?

See results


    0 of 8192 characters used
    Post Comment

    No comments yet.


    This website uses cookies

    As a user in the EEA, your approval is needed on a few things. To provide a better website experience, uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

    For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at:

    Show Details
    HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
    LoginThis is necessary to sign in to the HubPages Service.
    Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
    AkismetThis is used to detect comment spam. (Privacy Policy)
    HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
    HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
    Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
    CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
    Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the or domains, for performance and efficiency reasons. (Privacy Policy)
    Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
    Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
    Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
    Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
    Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
    VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
    PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
    Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
    MavenThis supports the Maven widget and search functionality. (Privacy Policy)
    Google AdSenseThis is an ad network. (Privacy Policy)
    Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
    Index ExchangeThis is an ad network. (Privacy Policy)
    SovrnThis is an ad network. (Privacy Policy)
    Facebook AdsThis is an ad network. (Privacy Policy)
    Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
    AppNexusThis is an ad network. (Privacy Policy)
    OpenxThis is an ad network. (Privacy Policy)
    Rubicon ProjectThis is an ad network. (Privacy Policy)
    TripleLiftThis is an ad network. (Privacy Policy)
    Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
    Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
    Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
    Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
    ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
    Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)