Showing posts with label Hubble Telescope. Show all posts
Showing posts with label Hubble Telescope. Show all posts

You Won't Believe What the Hubble Space Telescope Discovered!

The Most Amazing Hubble Space Telescope Discoveries






Dark Matter

Dark matter, which is invisible however displays its existence by way of gravity, makes up roughly 23 percentage of the universe. By examining the distortions brought about via dark matter's gravity on light from far away galaxies, Hubble helped assemble the greatest scale 3-d maps scientists have of where dark matter is dispensed in the universe. These helped exhibit the clumpiness of dark matter has curiously elevated over time, displaying it exhibits ordinary gravity, as opposed to something else. Better perception how dark matter behaves should assist scientists determine out what it truly is.






Pluto and its kin

Hubble observed two new moons of Pluto, dubbed Nix and Hydra, and currently mapped seasonal adjustments to its surface. Also, through assisting to find out the mass of Eris, which is 27 percentage extra large than Pluto, the attention that comparable bodies would possibly lurk in the Kuiper Belt and beyond helped demote Pluto and comparable objects to dwarf planet status. Future observations of such far away bodies should assist scientists higher recognize how the solar system evolved.






Dark Energy

By figuring out the rate at which the universe is expanding, Hubble might also have helped resolve the mystery of how historical the universe is, however it all of sudden grew to become up an even extra profound one — the reality that the charge of the universe's growth is no longer slowing down or even constant, however is inexplicably accelerating. The perpetrator in the back of this, dubbed dark energy, is now concept to make up seventy four percentage of the blended mass-energy in the whole universe, and it stays an utter enigma. Solving this mystery may want to revolutionize physics as we recognize it.





Black Holes

Hubble determined that super-massive Black holes likely lurk in each and every galaxy that has a bulge of stars at its center. The very tight hyperlink between the size of these central black holes and the size of their galaxies Hubble noticed additionally confirmed that each evolve in concert, shedding light on how the universe has evolved over time.






Age of the Universe  →

Before Hubble, it was once enormously unsure as to when the universe was born, which ought to lead to insufferable paradoxes, such as the laughable opportunity that stars astronomers detected had been older than our universe. By substantially narrowing down the rate at which the universe is expanding, Hubble helped refine estimates of the universe's age down to roughly 13.75 billion years, a end result that no longer solely performs a position in modeling how our universe has advanced over time, however additionally in our appreciation different apparently unrelated cosmic parameters, such as the mass of neutrinos. Stars that are billions of light years away naturally took billions of years to get here.





Extrasolar Organic Matter

NASA's Hubble Space Telescope has made the first detection ever of an organic molecule in the surroundings of a Jupiter-sized planet orbiting some other star. This step forward is an necessary step in finally figuring out signs and symptoms of existence on a planet outside our solar system. The molecule discovered via Hubble is methane, which beneath the proper occasions can play a key function in prebiotic chemistry - the chemical reactions viewed crucial to structure existence as we recognize it. This illustration depicts the extrasolar planet HD 189733b with its parent star peeking above its top edge.


Gamma ray bursts

Gamma ray bursts, which frequently release more energy in a few of seconds than the sun would in a billion years, are the largest explosions known to occur in space. The origin of these explosions remained a mystery for many years. These bursts are often found in galaxies that were low in metallicity, or low in elements heavier than helium, and were actively generating stars, a finding made possible in part by Hubble. This showed that huge stars crashed to produce black holes, which is how gamma ray bursts originated. Low-metallicity stars are more likely to maintain their mass and form black holes, and active star-forming galaxies are frequently rich in big stars that collapse swiftly.The basis of life on Earth is dust, which is also essential to the universe's operation.

The beginning of time

Before Hubble, the age of the universe was mostly unknown, which might result in absurd paradoxes like the absurd notion that stars that astronomers had found were older than the cosmos itself. Hubble contributed significantly to the reduction of the universe's expansion rate, which allowed for the reworking of universe age estimates to approximately 13.75 billion years. This result is important for understanding the mass of neutrinos and other seemingly unrelated cosmic parameters, as well as for modeling the evolution of our universe over time.

Planets, planets everywhere

In July 1994, just seven months after the first shuttle servicing mission, fragments of a comet torn apart by Jupiter's gravity slammed into the giant planet's atmosphere, blasting world-size blemishes in the cloud tops that were easily visible to amateur and professional astronomers alike.

However, the Hubble Space Telescope produced the sharpest, most breathtaking photos, offering a compelling example of the observatory's capacity to offer flyby-class views of other planets in the solar system in addition to Earth.


Hubble has been used to track Venusian clouds and dust storms on Mars, to study the churning atmospheres of Jupiter and Saturn, to monitor Saturn's rings and auroral displays on both planets and to keep tabs on Uranus and Neptune and their many moons. More recently, Hubble has been extensively used to map the moons of Pluto and help find post-flyby targets in the remote Kuiper Belt for NASA's Pluto-bound New Horizons spacecraft.

Getting spectacular images of Earth's neighbors was not a surprise. But actually imaging a planet orbiting another star -- a feat Hubble achieved in November 2008 -- and spectroscopically examining the atmospheres of several other extra-solar planets, are considered major achievements.

"When Hubble was launched, we didn't even have evidence there were planets around other stars," Riess said. "Not only have those been found, Hubble has helped characterize those. It's truly remarkable."

JWST captures rare star right before it goes supernova

 

James Webb Space telescope captures rare star right before it goes supernova

The uncommon sight of a Wolf-Rayet star – amongst the most luminous, most massive, and most quickly detectable stars acknowledged – used to be one of the first observations made by way of NASA’s James Webb Space Telescope in June 2022. Webb indicates the star, WR 124, in exceptional element with its effective infrared instruments. The star is 15,000 light-years away in the constellation Sagitta.

Massive stars race via their life cycles, and solely some of them go via a short Wolf-Rayet segment earlier than going supernova, making Webb’s exact observations of this uncommon segment treasured to astronomers. Wolf-Rayet stars are in the technique of casting off their outer layers, ensuing in their attribute halos of gasoline and dust. The star WR 124 is 30 instances the mass of the Sun and has shed 10 Suns’ worth of material – so far. As the ejected fuel strikes away from the star and cools, cosmic dirt varieties and glows in the infrared mild detectable through Webb.

The beginning of cosmic dirt that can continue to exist a supernova blast and make a contribution to the universe’s ordinary “dust budget” is of exquisite activity to astronomers for more than one reasons. Dust is fundamental to the workings of the universe: It shelters forming stars, gathers collectively to assist structure planets, and serves as a platform for molecules to structure and clump collectively – which include the constructing blocks of existence on Earth. Despite the many indispensable roles that dirt plays, there is nevertheless greater dust in the universe than astronomers’ modern dust-formation theories can explain. The universe is running with a dirt price range surplus.

Webb opens up new chances for analyzing important points in cosmic dust, which is first-rate found in infrared wavelengths of light. Webb’s Near-Infrared Camera (NIRCam) balances the brightness of WR 124’s stellar core and the knotty important points in the fainter surrounding gas. The telescope’s Mid-Infrared Instrument (MIRI) displays the clumpy shape of the fuel and dirt nebula of the ejected material now surrounding the star. Before Webb, dust-loving astronomers truly did now not have sufficient targeted facts to discover questions of dirt manufacturing in environments like WR 124, and whether or not the dirt grains have been massive and bountiful adequate to live to tell the tale the supernova and end up a good sized contribution to the average dirt budget. Now these questions can be investigated with actual data.

Stars like WR 124 additionally serve as an analog to assist astronomers apprehend a vital duration in the early records of the universe. Similar demise stars first seeded the younger universe with heavy factors cast in their cores – factors that are now frequent in the present day era, which includes on Earth.

Webb's unique image of WR 124 captures a fleeting, chaotic moment of change and ensures that further research will reveal the long-guarded secrets of cosmic dust.

The best observatory for home science is the James Webb Space Telescope. Webb will explore the unfathomable structures and beginnings of our cosmos and our region within it, as well as solve puzzles in our solar system and distant planets revolving around other stars. Webb is an worldwide software led by way of NASA with its partners, ESA (European Space Agency), and CSA (Canadian Space Agency).

Why is Webb's observation a unique occurrence?

Because only a small percentage of big stars undergo a brief Wolf-Rayet phase before going supernova, Webb's detailed observations are extremely rare.

The photo shows Wolf-Rayet stars in the process of shedding their outer layers, which is what gives them their distinctive gas and dust halos. With a mass thirty times that of the Sun, star WR 124 has already shed material equivalent to ten Suns. According to the US space agency, cosmic dust develops and glows in the infrared light that Webb can detect when the expelled gas cools and moves away from the star.

How helpful is Wolf-Rayet phase observation for scientists?

According to NASA, cosmic dust contributes to the universe's overall "dust budget" and can sustain supernova explosions, therefore understanding its origin is crucial for astronomers.


The basis of life on Earth is dust, which is also essential to the universe's operation.
 According to NASA, dust shields newborn stars, aids in the formation of planets, and gives molecules a surface on which to congregate and cluster. It also begs the interesting issue of why the cosmos is more dusty than current dust-formation theories anticipate, given all the vital functions that dust performs in the universe.

In addition to promising future discoveries that will unlock the long-kept secrets of cosmic dust, NASA stated that Webb's comprehensive image of WR 124 "preserves forever a brief, turbulent time of transformation."