एक ग्रह की अपने कक्ष में सूर्य से न्यूनतम दूरी को क्या कहा जाता है?

Venus is considered as 'Earth's twin' mainly because of similarities in which features?

The asteroid belt is located between the orbits of which two planets?

Which of the following terrestrial (rocky) planets in the solar system has no natural satellites (moons)?