Infrared spectroscopy of comets with ISO: What we learned on the composition of cometary dustThis chapter discusses the infrared spectroscopy of comets with Infrared Space Observatory (ISO). The ISO offers the opportunity to observe the spectrum of celestial bodies from 2.4 to 196 μm. This ...
Life came from Comets Theory Panspermia A theory has been put forward that life on Earth hitch-hiked on the back of a comet. The theory is based on the makeup of a comet. The theory has not yet been proven or disproved. Recently, due to the outbreak of the SARS virus, scientists hav...
What is the density of Comet Encke?Comet Encke:Comet Encke is an extremely short-period comet that orbits the sun every 3.3 years. However, the position of the Earth during the inner part of the orbit limits when the comet is visible. Every 32 to 33 years, the comet is visible in ...
Meteorites can provide valuable information about the formation of our solar system. They are some of the oldest rocks in existence, and can contain clues about the composition of asteroids, comets, and other planets. Meteorite: What is a meteorite. Read: Meteorite Identification: How to Identify...
What is the atmospheric composition of the asteroid belt? How many chemically different asteroids make up the asteroid belt? What does the asteroid belt contain? Of the asteroid belt, the Kuiper belt, and the Oort cloud: a. Which is closest to the Sun? b. Which generates comets? c. Which...
An extrasolar planet (aka. exoplanet) is a planet that orbits a star (i.e. is part of a solar system) other than our own. Our Solar System is only one among billions and many of them most likely have their own system of planets. As early as the sixteenth century, there have been...
What is an Astronomer? An astronomer studies celestial objects and phenomena in the universe. They explore and investigate various aspects of the cosmos, including stars, planets, galaxies, asteroids, comets, and other celestial bodies. Astronomers seek to understand the nature, composition, behavior,...
This organic matter was constantly altered on its long journey towards our planet, its final composition the product of a singular history which scientists are now attempting to reconstruct.但是这些最终进入地球海洋的碳质物质经历了一系列的变化，特定的温度、特定的事件、特定的恒星、来自太阳的特定量的...
If you stare at the sun, this lens concentrates a spot of sunlight on your retina, and it burns it too. The light is so intense that it kills cells on your retina. So much hype surrounds staring at a solar eclipse because, on a day-to-day basis, most folks know better than to ...
We further investigate the relationship between tropical land carbon change and sensitivity of historical atmospheric CO2 growth rate to tropical temperature variability and find a weak linear relationship. This sensitivity for most models is stronger than observed. We further use this “emergent ...