Click on image for full size
Image courtesy NASA/WMAP Science Team
The Oldest Light in the Universe
News story originally written on February 14, 2003
NASA scientists have taken a "snapshot" picture of the oldest light
in the universe. The picture shows what is left of light given off during the big
bang. The light is over 13 billion years old! The old light has turned into microwave
radiation, like the energy used to cook in a microwave oven.
The picture of the old light was made by a spacecraft called WMAP. WMAP
measured the age of the universe. Scientists now think the universe is almost 14
billion years old. WMAP also shows that the first stars
started to shine about 200 million years after the big bang. That is much
earlier than scientists expected.
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