Posted on April 22, 2022 (Updated on July 9, 2025)
What is a so called hot Jupiter?
Space & NavigationWhat is a so-called “hot Jupiter”? a planet with a mass similar to Jupiter but very close to the central star and therefore hot. What must be true in order for astronomers to be able to use the Doppler technique to determine a planet’s mass? The planet’s orbit must be viewed nearly edge on. What
Posted on April 22, 2022 (Updated on July 9, 2025)
What time will the lunar eclipse be visible in Virginia?
Space & NavigationEclipses in Virginia City, Virginia, USA Global Event: Total Lunar Eclipse Local Type: Total Lunar Eclipse, in Virginia City Begins: Sun, May 15, 2022 at 9:32 pm Maximum: Mon, May 16, 2022 at 12:11 am 1.413 Magnitude Ends: Mon, May 16, 2022 at 2:50 am When can I see the eclipse in Virginia? May 15–16,
Posted on April 22, 2022 (Updated on July 9, 2025)
What type of eclipse is an annular eclipse?
Space & NavigationAnnular (an-yə-lər) solar eclipse: An annular eclipse happens when the Moon is farthest from Earth. Because the Moon is farther away, it seems smaller. It does not block the entire view of the Sun. The Moon in front of the Sun looks like a dark disk on top of a larger Sun-colored disk. Is an
Posted on April 22, 2022 (Updated on July 9, 2025)
When a complex number z is written in polar form?
Space & NavigationA complex number z in polar form is given as r(cosθ+isinθ) and is often abbreviated as rcisθ, where r equals the modulus of the complex number. The value θ is called the argument of z, denoted by arg(z). Note that r(cos(θ+2kπ)+isin(θ+2kπ)) represents the same complex number for every integer k. When a complex number is
Posted on April 22, 2022 (Updated on July 9, 2025)
What is stellar wobble?
Space & NavigationStellar Wobble. What we measure at the telescope is a change in the wavelength in light coming from a star over the course of days, months, and years. This changing wavelength is the Doppler shift of the light, resulting from the star orbiting a common center of mass with a companion planet. How does the
Posted on April 22, 2022 (Updated on July 9, 2025)
How do you define parallel and perpendicular lines?
Space & NavigationParallel lines are lines in a plane that are always the same distance apart. Parallel lines never intersect. Perpendicular lines are lines that intersect at a right (90 degrees) angle. What is parallel lines and perpendicular lines? Parallel lines are always the same distance apart for their entire length. Perpendicular lines cross each other at