Let us distinguish what we can think of as possible from what is physical reality.
The physical reality is as follows: A satellite launched into orbit that follows the shape of a hyperbola will free fall; that is, no force is necessary to move it, This satellite will not impact on the earth because its trajectory matches the curvature of the earth. If you were riding on that satellite you would think you were getting further away from earth. The fact is that satellite is only circling the earth forever. The same thing would happen if a satellite were launched into orbit out of the universe instead of the earth. This satellite will free fall but circling the universe. That is why the statement "the universe is finite but boundless."
The possibility of an end of the universe is only in the mind. It is like building a bridge intended to be straight that would link the earth with Venus. The possibility of such a bridge is only in the mind. The physical reality is that that bridge would end at your feet. This is explained by the generalized theory of relativity. The straightest line is curved called geodesic.
Fascinating question, Eugbug. There is a lot of evidence that space had a beginning, and is expanding right now. I believe it was Penrose and Hawking who both proved mathematically that space had a beginning--in addition to the evidence-- therefore, with the expansion being finite we know that there is an end to space. So what is beyond that end? I personally believe it is a higher dimension of space, as for example, the 4th spacial dimension. The 4th dimension could be permeating our space, and the expansion of our 3D space is simply the expansion of a speck in 4D space. The way my dog eats, I have a big bang expansion going on right here in the house!
In fact, Einstein had included a fourth dimension to the three Euclidean dimensions. The fourth dimension is time that resulted in the concept space-time in the theory of gravity, subsumed in the generalized theory of relativity.Time is Riemannian.
by Robert pires 13 years ago
is it a reality or just an hypothetical concept????
by Emile R 11 years ago
I've put this into the philosophy forum because I'm interested in what those who ponder the meaning of the cosmos would consider the ramifications of the answer to be.We talk of the Space-Time Continuum. We know the following:Cosmologists tell us it would be impossible to go back in time because...
by Stacie L 13 years ago
Dead Satellite Will Fall to Earth By September's End, NASA SaysBy Clara Moskowitz, SPACE.com Senior WriterSpace.com | SPACE.com – A defunct satellite poised to fall back to Earth will make its death plunge during the last week of September, NASA officials now say.The spacecraft, an old NASA climate...
by IntuitiveMind 13 years ago
How Do You Explain The Age of The Universe?I understand religious people believe God made the world and everything in it and everything in the universe. According to the bible, the world is only several thousand years old. There is scientific proof that the size of the known universe is...
by Susana Smith 15 years ago
Assuming there are other planets out there with civilsation at least as advanced as ours, what kinds of religions would they have there? Do you think they'd have had Jesus, Mohammed, Krishna and Buddha visit them also? Would they have the exact same Bible, Qur'an or Bhagavad Gita? Would they have...
by jomine 13 years ago
This is only for those people who say time exists, but ask for evidence of god's existence.If you are not one among them, this is not for you.So what is the evidence that time exist?Or better still, what is TIME?Don't tell me the clock is time, what the clock does is showing a number which make...
Copyright © 2024 The Arena Media Brands, LLC and respective content providers on this website. HubPages® is a registered trademark of The Arena Platform, Inc. Other product and company names shown may be trademarks of their respective owners. The Arena Media Brands, LLC and respective content providers to this website may receive compensation for some links to products and services on this website.
Copyright © 2024 Maven Media Brands, LLC and respective owners.
As a user in the EEA, your approval is needed on a few things. To provide a better website experience, hubpages.com 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: https://corp.maven.io/privacy-policy
Show DetailsNecessary | |
---|---|
HubPages Device ID | This is used to identify particular browsers or devices when the access the service, and is used for security reasons. |
Login | This is necessary to sign in to the HubPages Service. |
Google Recaptcha | This is used to prevent bots and spam. (Privacy Policy) |
Akismet | This is used to detect comment spam. (Privacy Policy) |
HubPages Google Analytics | This is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy) |
HubPages Traffic Pixel | This 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 Services | This is a cloud services platform that we used to host our service. (Privacy Policy) |
Cloudflare | This 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 Libraries | Javascript software libraries such as jQuery are loaded at endpoints on the googleapis.com or gstatic.com domains, for performance and efficiency reasons. (Privacy Policy) |
Features | |
---|---|
Google Custom Search | This is feature allows you to search the site. (Privacy Policy) |
Google Maps | Some articles have Google Maps embedded in them. (Privacy Policy) |
Google Charts | This is used to display charts and graphs on articles and the author center. (Privacy Policy) |
Google AdSense Host API | This 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 YouTube | Some articles have YouTube videos embedded in them. (Privacy Policy) |
Vimeo | Some articles have Vimeo videos embedded in them. (Privacy Policy) |
Paypal | This 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 Login | You 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) |
Maven | This supports the Maven widget and search functionality. (Privacy Policy) |
Marketing | |
---|---|
Google AdSense | This is an ad network. (Privacy Policy) |
Google DoubleClick | Google provides ad serving technology and runs an ad network. (Privacy Policy) |
Index Exchange | This is an ad network. (Privacy Policy) |
Sovrn | This is an ad network. (Privacy Policy) |
Facebook Ads | This is an ad network. (Privacy Policy) |
Amazon Unified Ad Marketplace | This is an ad network. (Privacy Policy) |
AppNexus | This is an ad network. (Privacy Policy) |
Openx | This is an ad network. (Privacy Policy) |
Rubicon Project | This is an ad network. (Privacy Policy) |
TripleLift | This is an ad network. (Privacy Policy) |
Say Media | We partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy) |
Remarketing Pixels | We 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 Pixels | We 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. |
Statistics | |
---|---|
Author Google Analytics | This is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy) |
Comscore | ComScore 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 Pixel | Some articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy) |
Clicksco | This is a data management platform studying reader behavior (Privacy Policy) |