This image shows the amount of ozone in Earth's stratosphere. The colors represent different amounts of ozone with purple and blue indicating very low levels of stratospheric ozone. Yellow and green represent higher levels of ozone. Notice the blue and purple spot over the South Pole which is the Antarctic ozone hole. The ozone levels are monitored by satellite.
Click on image for full size
Courtesy of NASA
Repairing the Antarctic Ozone Hole!
News story originally written on September 17, 2002
The ozone layer in our atmosphere is very important because it shields the Earth from the Sunís harmful rays. Scientists have been watching a hole grow in the ozone layer above the South Pole, but now they have some good news. That ozone hole may close by 2050!
Ozone holes form when man-made particles, called CFCs, brake ozone particles apart.
People on the Earth have been trying to cut down on activities that release CFCs and it looks like we are making a difference. According to scientists, there are less CFCs in our atmosphere than there were two years ago.
Thatís great news and it means that people can really make a difference when they agree to change!
Shop Windows to the Universe Science Store!
Our online store
includes fun classroom activities
for you and your students. Issues of NESTA's quarterly journal, The Earth Scientist
are also full of classroom activities on different topics in Earth and space science!
You might also be interested in:
It was another exciting and frustrating year for the space science program. It seemed that every step forward led to one backwards. Either way, NASA led the way to a great century of discovery. Unfortunately,...more
The Space Shuttle Discovery lifted off from Kennedy Space Center on October 29th at 2:19 p.m. EST. The sky was clear and the weather was great. This was the America's 123rd manned space mission. A huge...more
Scientists found a satellite orbiting the asteroid, Eugenia. This is the second one ever! A special telescope allows scientists to look through Earth's atmosphere. The first satellite found was Dactyl....more
The United States wants Russia to put the service module in orbit! The module is part of the International Space Station. It was supposed to be in space over 2 years ago. Russia just sent supplies to the...more
A coronal mass ejection (CME) happened on the Sun last month. The material that was thrown out from this explosion passed the ACE spacecraft. ACE measured some exciting things as the CME material passed...more
Trees and plants are a very important part of this Earth. Trees and plants are nature's air conditioning because they help keep our Earth cool. On a summer day, walking bare-foot on the sidewalk burns,...more
There is something special happening in the night sky. Through mid-May, you will be able to see five planets at the same time! This doesn't happen very often, so you won't want to miss this. Use the links...more