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Author Archives: lin0214
The Wide Field Infrared Survey Telescope (WFIRST)
WFIRST, which stands for Wide Field InfraRed Survey Telescope, is NASA’s observatory that is designed to research the area of dark energy, exoplanets, as well as infrared astrophysics for six years. WFIRST’s primary mirror is 2.4 meters, which is 7.9 feet, in diameter. This size is the same as the size of Hubble Space Telescope’s … Continue reading The Wide Field Infrared Survey Telescope (WFIRST) → Continue reading
What Is Hyperthermophile
Hyperthermophile is an organism that is able to live and thrive at high temperatures, compared to the suitable environment for survival for most of the lives on Earth. For example, a hyperthermophile can handle a temperature above 80°C, which is 176-degree Fahrenheit. The first identified hyperthermophile is Sulfolobus acidocaldarius, which is both a hyperthermophile and … Continue reading What Is Hyperthermophile → Continue reading
Some Interesting Facts about Uranus
Uranus is one of the gas giants in our solar system. Unlike most of the objects in our solar system, Uranus is rotating in an opposite direction, which means it is rotating clockwise if viewed from Earth’s north pole. However, this is not a unique feature. In fact, Venus does this as well. Uranus’s tile … Continue reading Some Interesting Facts about Uranus → Continue reading
Facts About Callisto
Callisto is one of Jupiter’s moons, and it is one of the four Galilean moons. Compared to Earth’s Moon, Callisto’s diameter is about 1.4 times that of the Moon and 1.5 times in mass. The distance between its parent planet, Jupiter, and Callisto is about 5 times the distance between Earth and our Moon. From … Continue reading Facts About Callisto → Continue reading
Measuring the Interior of the Earth
It is very hard to drill to the deepest part of the Earth. However, there are some indirect measurements that allow us to know limited information about the interior structure of the Earth. One of those is the measurement of seismic waves. By knowing the characteristic of seismic waves, we are able to identify the properties … Continue reading Measuring the Interior of the Earth → Continue reading
Spring tides and Neap tides
Tides happen everyday, but there are certain types of tides do not happen everyday. The strongest tides and the weakest tides are called spring tides. Spring tides happen when the Sun and Moon are aligned, causing unusually strong gravitational forces and resulting very high and very low tides. Because it takes a month for the Moon … Continue reading Spring tides and Neap tides → Continue reading
Spring tides and Neap tides
Tides happen everyday, but there are certain types of tides do not happen everyday. The strongest tides and the weakest tides are called spring tides. Spring tides happen when the Sun and Moon are aligned, causing unusually strong gravitational forces and resulting very high and very low tides. Because it takes a month for the Moon … Continue reading Spring tides and Neap tides → Continue reading
How do radio waves differ from visible light
Radio waves actually travel at the speed of light in vacuum, which is about 300,000,000 meters per second. It is fast enough for anyone on Earth to contact others on Earth in less a second. Radio waves are electromagnetic waves, so is light. The differences between light and radio waves are their frequencies and wavelengths. Wavelengths … Continue reading How do radio waves differ from visible light → Continue reading
Posted in Light
Tagged astro2110, blog2, Radio Waves
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How do radio waves differ from visible light
Radio waves actually travel at the speed of light in vacuum, which is about 300,000,000 meters per second. It is fast enough for anyone on Earth to contact others on Earth in less a second. Radio waves are electromagnetic waves, so is light. The differences between light and radio waves are their frequencies and wavelengths. Wavelengths … Continue reading How do radio waves differ from visible light → Continue reading
Posted in Light
Tagged astro2110, blog2, Radio Waves
Comments Off on How do radio waves differ from visible light
Historical Astronomers in Context
Johannes Kepler (December 27, 1571- November 15, 1630), summarized his discoveries with three physical principles. First, the planets move in elliptical orbits, but not perfect circles, with the Sun at one focus. Second, he argued that the time necessary to traverse any arc of a planetary orbit is proportional to the area of the sector between … Continue reading Historical Astronomers in Context → Continue reading