2/29/2024 0 Comments Aladin astronomy overlaying frames![]() The views expressed are those of the author and do not necessarily reflect the views of the publisher.24 October 2023: A special Announcement of Opportunity (AO) is soliciting the participation of the European community in the role of ESA-appointed representatives to the NASA Great Observatory Maturation Program’s (GOMAP) Science, Technology, Architecture Review Team (START) for the Habitable Worlds Observatory (HWO) mission. Read the original article.įollow all of the Expert Voices issues and debates - and become part of the discussion - on Facebook and Twitter. I’d love to see what amazing things you find over on Twitter at article is republished from The Conversation under a Creative Commons license. There are also other amazing types of galaxies, including mergers and lenses, which are just waiting for you to find them. The majority of star formation has stopped, but lenticular galaxies can still have significant amounts of dust in them. These galaxies can be thought of as the "in-between" of spiral and elliptical galaxies. Lenticular galaxies appear like cosmic pancakes, fairly flat and featureless in the night sky. These type of galaxies tend to have older stars and less active star-forming regions compared to spiral galaxies. 9 Ideas about black holes that will blow your mindĮlliptical galaxies are largely featureless and less "flat" than spirals, with stars occupying almost a 3D ellipse at times. The 12 strangest objects in the universe 11 fascinating facts about our Milky Way galaxy ![]() Star facts: The basics of star names and stellar evolution By changing the survey to GALEXGR6/AIS, we are now looking at only UV wavelengths, and what a difference that makes! When young stars are forming, vast amounts of ultraviolet (UV) radiation are emitted. To confirm our suspicions of star formation we can select to look at data from different surveys, in different wavelengths. This might hint at star formation and stellar activity happening in the outer ring, but less so in the center. In this galaxy, the outer ring appears to be more blue than the center red section. It’s important to note that things that look blue (shorter wavelengths) are generally hotter than things that look red (longer wavelengths). However, these are fairly representative of what the galaxy would look like with our own eyes.Ī general rule of thumb as an astronomer is that "color" differences within galaxies are because of physically different environments. The colors we see represent different filters from this telescope. The first image of the Cartwheel Galaxy we see is from optical imaging by the Digitized Sky Survey. (Image credit: DSS colored - Digitized Sky Survey - STScI/NASA, Colored & Healpixed by CDS) Online view in Aladin Lite of the Cartwheel Galaxy, a lenticular/ring galaxy 500 million light-years away from Earth discovered in 1941 by iconic astronomer Fritz Zwicky. The location will be centered in the interface. In the Aladin interface, you can search for both the popular name of an object (like "cartwheel galaxy") or known coordinates. ![]() Let’s start our universal tour by searching for one of the most visually stunning galaxies out there, the Cartwheel Galaxy. Here we can scan the entire sky for hidden galaxies, and even decipher information about their stellar populations and evolution. Go online for a universe atlasĪladin Lite is one of the greatest online tools available to look at our universe through the eyes of many different telescopes. In some cases human eyes will only ever look at what the computers have deemed is interesting! Massive amounts of data are hosted online, just waiting to be admired, for free. In the 21st century we have access to information any time, anywhere via the internet.Īutomatic telescopes and surveys now provide us with so much data that we require machines to help us analyze it. Only a few decades ago astronomers had to tediously examine photographic plates after a long, cold and lonely night of observing.
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