Messenger' satellite has been launched by NASA for the study of
Answer: Option A
Solution(By Examveda Team)"MESSENGER" was a robotic spacecraft sent by NASA. The name is a reference to the messenger deity of the same name from Roman mythology) was a NASA robotic spacecraft that orbited the planet Mercury between 2011 and 2015. The probe was launched aboard a Delta II rocket in August 2004 to study Mercury's chemical composition, geology, and magnetic field.
Which of the following statements is/are correct with regard to Milky Way?
1. It is a spiral galaxy.
2. The solar system resides in one of its spiral arms.
Select the correct answer using the codes given below
A. 1 only
B. 2 only
C. Both 1 and 2
D. Neither 1 nor 2
A. Pole star rotates with the same period as the earth
B. Pole star is a star of our own galaxy
C. Sun and Pole star are in two opposite directions relative to earth
D. Pole star lies in the axis of spin of the earth