How often is google earth update and on average how old are the images, and why can't you zoom in on some Than

Answer 1

From Google earth FAQs:

3. How old are the images in Google Earth? How often are they updated?

"Google Earth acquires the best imagery available, most of which is approximately one to three years old. We add to our database on a regular basis. We’re not able to provide you with detailed information regarding when a specific area will be updated. Also, we do not offer high resolution data by order as this imagery will be added when it is available from our providers."

5. Why do I see blurry images?

"We're aware that the imagery for some areas may appear blurry or contain cloud coverage or discoloration. We update our imagery regularly with the best data available, so it’s likely our providers don’t currently provide higher resolution imagery for the area you’re looking at."

Answer 2

The images on Google Earth are anywhere from one year to five years old. The images that we see are chosen for there resolution and quality. The sections that you can't zoom in to close on are of poor quality and resolution. Also, some areas are blocked do to security reasons.

As to "how often" are they updated. Google is updating all the time. As soon as then can acquire better imagery, they use it. Always remember that Google does "not" own there own sattilite, to they must get there data from others.

Answer 3

Most of their imagery is approximately one to three years old.

They add data to their Primary Database on a regular basis. You can view a list of these additions on the following Google Earth Community page:
http://bbs.keyhole.com/ubb/postlist.php/Cat/0/Board/latest

Many locations do not have high resolution imagery available yet but they're "working hard" to update their imagery. There is a monthly newsletter which highlights all of the data additions on an ongoing basis. You can subscribe at the provided link.
http://earth.google.com/sightseer_signup.html

Answer 4

if you want to find out if your running the latest version use

http://www.filehippo.com/updatechecker/

its great.. and takes no time to check if ur running the latest one.

as for the pics, well sometimes you can figure out when they were taken by changed building or things like local events.

I'll give you an example, locally there is a school near me, they have a car boot sale on a sunday... so cars are in the playground.. so i knew the images were taken on a sunday. you probably could figure it out by the shadows that the sun casts. or what season by leaf's on the tree's etc.

as for some area's not being abled to be zoomed.. simply because they haven't been mapped or for other reasons.

Answer 5

The google earth that i have has pictures that are last's years.