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NASA s Roman telescope to use rare events to calculate expansion rate of universe

NASA s Roman telescope to use rare events to calculate expansion rate of universe
phys.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from phys.org Daily Mail and Mail on Sunday newspapers.

Justin pierelJennifer lotz stscAnn feild stscLou strolgerJoseph depasquale stscStevea rodneyZoltg levay stscFrontiersn teamTeam stscHigh latitude time domainSpace telescope science institute stscHubble space telescopeSupernova refsdalNancy grace roman space telescopeTommaso treuPatrick kelly

Using Hubble, researchers measure the mass of a single white dwarf for the first time

Using Hubble, researchers measure the mass of a single white dwarf for the first time
nasaspaceflight.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from nasaspaceflight.com Daily Mail and Mail on Sunday newspapers.

United statesPeter mcgillKailash sahuAnn feild stscUniversity of californiaSpace telescope science instituteEuropean space agencyHubble space telescopeAnn feildJoseph depasqualeWebb space telescopeWith webb

Hubble measures mass of a lone white dwarf

Hubble measures mass of a lone white dwarf
it-online.co.za - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from it-online.co.za Daily Mail and Mail on Sunday newspapers.

United statesGoddard space flight centerUnited kingdomKailash sahu stscPeter mcgillKailash sahuAnn feild stscJoseph depasquale stscUniversity of californiaResearch in astronomySpace telescope science institute stscUniversity of cambridgeMonthly notices of the royal astronomical societySpace telescope science institute in baltimoreAssociation of universitiesHubble space telescope

From candles to ladders: how astronomers measure very large distances in the universe

From candles to ladders: how astronomers measure very large distances in the universe How do we know the universe is expanding? Your high school trigonometry is involved in the process. Ever wondered how scientists know the distance to planets, stars, galaxies? Or even better, how to measure the universe’s size and its expansion? Well, they certainly don’t have a giant ruler, but they have other tools including “candles” and “ladders”. The Parallax and 1 parsec = 3.26 light-years. Credits: astronomy.com The easiest way to measure things far from Earth is called parallax and was discovered by ancient scientists not just the Greeks (who are usually responsible for discovering things), but several other ancient societies with knowledge of astronomy.

Lowell observatoryUnited statesVesto slipherHarlow shapleyHenrietta swan leavittAnn feild stscEdwin hubbleGeorge lemaGustav kirchhofHenrietta leavittSupernova search teamPink floydDark sideRobert wilhelm bunsenAdam hart davisAstronomer vesto slipher