- which is meant by EQUINOX?
- moon completes its orbit around the earth in _____ days:
- The largest among the following is:
- The largest producer of solar energy in the world is:
- Constellation is :
- LED technology is energy efficient.what does LED stand for?
- The planet mercury is difficult to be observed most of the time because:
- How many planets are there in the Solar System?
- Solar system consist of:
- Which of the following planets of the solar system has the longest day?