Glossary of Radio Astronomy Terms
Retrieving Glossary Terms...
The time taken by the Earth to complete one revolution around the sun. This is equivalent to 365.2425 days
A star such as the Sun that sits at a stable point in its evolution.
Astronomers often refer to the date of an astronomical event as the date it was witnessed on Earth, even though the object is many thousands or millions of light-years away, taking that long for the light to reach us. This is concept called “Look Back Time.”