SCIENCE: Astronomers discover the most distant galaxy.

Astronomers have dis­cov­ered a galaxy more than 330 mil­lion years old after the Big Bang. It is accord­ing to them the galaxy
the far­thest ever dis­cov­ered. For its rather faint light to reach us on earth, it would have trav­eled 13.5 bil­lion light-years.

The new galaxy in ques­tion could be a quas­er with a huge, active black hole at its cen­ter or a star­burst, researchers who have called it HD1 remain skep­ti­cal what it real­ly is.
If the sec­ond hypoth­e­sis is true, then the short time need­ed for the for­ma­tion of such a mass is a chal­lenge in the frame­work of mod­els of for­ma­tion and evo­lu­tion of black holes.

For astro­physi­cist Fabio Pacuc­cu of the Havard & Smith­son­ian Cen­ter for Astro­physics: “Answer­ing ques­tions about the nature of such a dis­tant source is very dif­fi­cult”.
“It’s like guess­ing the nation­al­i­ty of a ship from the flag it flies, while being far ashore, with the ship in the mid­dle of a gale and thick fog. You can can ‑to be able to see cer­tain col­ors and shapes of the flag, but not in their entire­ty It is ulti­mate­ly a long game of analy­sis and exclu­sion of implau­si­ble scenarios.

It is a pri­ori dur­ing an inves­ti­ga­tion look­ing for the galax­ies of the begin­ning of the uni­verse that the HD1 galaxy was dis­cov­ered.
Dur­ing the inves­ti­ga­tion, four high-pow­ered infrared and opti­cal tele­scopes were used, these are the Sub­aru, Vista, British infrared, and Spitzer space tele­scopes. The tele­scopes car­ried out a total of 12,000 hours of obser­va­tion to find light in the ear­ly uni­verse.
Accord­ing to astronomer Yuichi Harikane of the Uni­ver­si­ty of Tokyo: “It was very dif­fi­cult to find HD1 among more than 700,000 objects”. bil­lions of light-years away, which gave me a lit­tle goose­bumps when I found it.”

The col­or red occurs when a source of light moves away from us and is known as red­shift. It is called so because there is an increase in the wave­length of the light. which orig­i­nates from the source towards the red­der side of the elec­tro­mag­net­ic spectrum.

Be the first to comment

Leave a Reply

Your email address will not be published.