Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: June 14, 2025
The possession of the spectroscope has enabled astronomers during later years to study the chemical composition of comets by analyzing their light. At first the only substances thus discovered in them were hydro-carbon compounds, due evidently to the gaseous envelopes in which some combination of hydrogen with carbon existed.
Its nucleus, when brightest, was comparable to the star Cor Caroli, a narrow, perfectly straight ray proceeding from it to a distance of 10°. This was easily shown by Brédikhine to belong to the hydrogen type of tails; while a "strange, faint second tail, or bifurcation of the first one," observed by Captain Noble, August 24, fell into the hydro-carbon class of emanations.
Word Of The Day
Others Looking