2006-10-19 08:24:55 · 7 answers · asked by mingo3doh 1 in Science & Mathematics ➔ Physics
Hidden behind a shroud of dust in the constellation Cygnus is an exceptionally bright source of radio emission called DR21. Visible light images reveal no trace of what is happening in this region because of heavy dust obscuration. In fact, visible light is attenuated in DR21 by a factor of more than 10,000,000,000,000,000,000,000,000,000, 000,000,000,000 (ten thousand trillion heptillion).
2006-10-19 08:27:33 · answer #1 · answered by Jessica B 3 · 0⤊ 0⤋
A heptillion is 10^21 or 1,000,000,000,000,000,000,000.
10^3 Thousand
10^6 Million
10^9 Gillion
10^12 Tetrillion
10^15 Pentillion
10^18 Hexillion
10^21 Heptillion
10^24 Oktillion
10^27 Ennillion
10^30 Dekillion
2006-10-19 15:28:03 · answer #2 · answered by Dan B 2 · 0⤊ 0⤋
10^21 Heptillion
As proposed by Russ Rowlett, based on Greek-derived numerical prefixes
It took me 30 seconds on wikipedia to find this out
NOTE:
10^18 is a hexillion
2006-10-19 15:27:49 · answer #3 · answered by farrell_stu 4 · 0⤊ 0⤋
It's a Greek Based name proposed for large numbers.
As large as 10^21
2006-10-19 15:28:53 · answer #4 · answered by aazib_1 3 · 0⤊ 0⤋
10 to the 21st power.
2006-10-19 15:28:45 · answer #5 · answered by Robert 5 · 0⤊ 0⤋
ok a heptilillion is 1 000 000 000 000 000 000
1 and 18 zeros
2006-10-19 15:27:33 · answer #6 · answered by craftyboy 2 · 0⤊ 0⤋
I cannot find any such word.
2006-10-19 15:30:43 · answer #7 · answered by Max 6 · 0⤊ 0⤋