WebMar 17, 2015 · Using Hubble’s Law enables the crucial determination of Hubble distances to galaxies and quasars (Hubble distances are those derived from Hubble’s Law using the observed velocity of the object; these distances represent the true cosmic distance plus a small peculiar motion component). http://astro.wku.edu/astr106/Hubble_intro.html
Imagine the Universe!
WebApr 9, 2024 · One method uses galaxies' velocities as a function of distance to deliver a Hubble constant value of about 73 ± 1 kilometers per second per megaparsec (km/s/Mpc), with 1 Megaparsec representing ... WebApr 14, 2024 · The James Webb Space Telescope deep field image showing some of the earliest and most distant galaxies ever seen. Since it started delivering its first results in July 2024, the James Webb Space Telescope (JWST) has been supplying stunning images of the universe that include observations of the most distant and early galaxies we've ever seen. georgetown tennis camp
Hubble
WebFeb 20, 2024 · The first rung on this ladder is the use of trigonometric parallax to determine distances to the nearest stars. Some of these nearest stars are Cepheid variable stars with a luminoisty that varies over time. These stars have a relationship between their period and average lumniosity. The closest known galaxy to us is the Canis Major Dwarf Galaxy, at 236,000,000,000,000,000 km (25,000 light years) from the Sun. The Sagittarius Dwarf Elliptical Galaxy is the next closest , at 662,000,000,000,000,000km (70,000 light years) from the Sun. The Large Magellanic Cloud, … See more The Large and Small Magellanic clouds were thought to be the closest galaxies to ours, until 1994, when the Sagittarius Dwarf Elliptical Galaxy (SagDEG) was discovered. In 2003, … See more Astronomers primarily use Cepheid and/or RR Lyrae Variables to measure distances to the LMC, the SMC, and the Dwarf Galaxies. The distance to the LMC has come to play such a crucial role in establishing the … See more To get to the closest galaxy to ours, the Canis Major Dwarf, at Voyager's speed, it would take approximately 749,000,000 years to travel the distance of 25,000 light years! If we could travel at the speed of light, it would still take … See more If you measure the distance to one object in the LMC, for example, you know the distances to all the millions of objects in the LMC fairly … See more WebApr 14, 2024 · There is an important way of calibrating this method of measuring cosmic distances called spectroscopy (opens in new tab) which also reveals information about … georgetown tennis team