the imaginary line that divides the Earth into the Northern and Southern Hemispheres; the plane perpendicular to the Earth's axis at zero degrees latitude.

कर्क रेखा

English Usage: The equatorial plane of the Earth receives the most direct sunlight throughout the year.

Hindi Usage: पृथ्वी का कर्क रेखा साल भर में सबसे प्रत्यक्ष धूप प्राप्त करता है।