Earlier Appearance: April thru May, 1910 at 13.9 Million Miles from Earth. Comet speed was 157,800 mph, or some 85 times the speed of a bullet! The Earth spent 6 hours inside the 24 million-mile-long tail (Some 6,056 times the width of our planet).
Last Appearance: March thru April, 1986 at 39 Million Miles from Earth. Comet speed was 121,572 mph.
Water release from the comet was measured by the spacecraft Giotto, and the results were (Per Minute) : 2 Million Pounds or 230,000 Gallons or the equivalent of 12 average size swimming pools!
Furthest from the Sun: December 9, 2023 at 3.3 Billion Miles. Comet speed was 2,034 mph.
Next Appearance: July thru August, 2061 at 44 Million Miles from Earth. Comet speed will be 121,356 mph.
Subsequent Appearance: April thru May, 2134 at 8.5 Million Miles from Earth, (Closest approach to Earth ever known to occur). Comet speed will be 146,052 mph.
Last Appearance: March thru April, 1986 at 39 Million Miles from Earth. Comet speed was 121,572 mph.
Water release from the comet was measured by the spacecraft Giotto, and the results were (Per Minute) : 2 Million Pounds or 230,000 Gallons or the equivalent of 12 average size swimming pools!
Furthest from the Sun: December 9, 2023 at 3.3 Billion Miles. Comet speed was 2,034 mph.
Next Appearance: July thru August, 2061 at 44 Million Miles from Earth. Comet speed will be 121,356 mph.
Subsequent Appearance: April thru May, 2134 at 8.5 Million Miles from Earth, (Closest approach to Earth ever known to occur). Comet speed will be 146,052 mph.
