- It is a space telescope being jointly developed by NASA, the European Space Agency (ESA), and the Canadian Space Agency (CSA).
- It has taken 30 years and $10bn to develop, and is being described as one of the grand scientific endeavors of the 21st Century.
What is the goal of this telescope?
- The telescope will be able to see just about anything in the sky.
- However, it has one overriding objective – to see the light coming from the very first stars to shine in the Universe.
- These pioneer stars are thought to have switched on about 100-200 million years after the Big Bang, or a little over 13.5 billion years ago.
- Webb will be picking out groupings of these stars.
- They are so far away from their light – even though it moves at 300,000km per second – will have taken billions of years to travel the cosmos.