FYI: The sun will be nearest to our planet tomorrow, giving an opportunity to astro-enthusiasts to carry out several experiments. "At 5:53 am tomorrow (Perihelion Day), the Earth will be at its nearest point from the sun. The distance at that time is 147 million km," Planetary Society of India General Secretary N Sri Raghunandan Kumar said today. 

Every January, the Earth is at perihelion, the closest from the Sun for the year and in July it is at aphelion, the farthest to the Sun for the year, he said. The word perihelion comes from the Greek words "peri" (meaning "near") and "helios" (meaning "sun").