Every week TecMundo and #AstroMiniBR Choose the most incredible astronomical curiosities that will keep you always up to date with fascinating information about the universe. Check this out!
1. A new measurement for the Hubble constant
This month the James Webb Space Telescope (JWST) made a significant observation of a type Ia supernova called “SN H0pe.” This supernova was particularly interesting because it was distorted by a gravitational lens. a phenomenon in which the gravity of a large object, such as a galaxy cluster, bends the spacetime around it and bends light from more distant objects.
In this particular case, the light from the supernova was split into three separate images, each representing the explosion at different times. This abundance allowed scientists to precisely measure the expansion rate of the universe, known as the Hubble constant.
The new estimate resulted in a value of 75.4 kilometers per second per megaparsec; this contributed to the debate over the exact value of this constant; because this is different from measurements made by other methods, such as observations of the cosmic microwave background. lower value.
This inconsistency This phenomenon, known as the “Hubble tension”, has intrigued cosmologists for years and raised the possibility that new discoveries will be needed. Explain the difference between values.
2. Cosmic periodic table!
picture below presents the “cosmic periodic table”It is a concept used to describe the abundance and distribution of chemical elements in the universe based on the cosmic origin of atoms.
Unlike the classical periodic table we know, which organizes elements according to their chemical properties, the cosmic table reflects the formation of elements over time, from the Big Bang to the formation processes in the cores of stars.
Fence 75% of the universe consists of hydrogen, the lightest and most abundant element, followed by helium. Most of these two elements were formed in the first few thousand years after the Big Bang. The heaviest elements, such as carbon, oxygen, carbon and iron, are formed inside stars through nuclear fusion and dispersed into space during supernova events.
Elements It is even rarer, like gold and uranium, and is formed in extreme astrophysical events such as neutron star mergers!
3. New observations of Local Group galaxies
A team of international astronomers has been expanded Surveys of lesser-known galaxies in the Local Group, such as IC 10, NGC 147 and NGC 185 near the constellation Cassiopeia. These galaxies are considered dwarf galaxies and are much fainter than the most prominent galaxies in the group, such as Andromeda and the Triangle.
Although difficult to observe, their analysis reveals valuable information about star formation and evolution processes in small galactic environments. For example, IC 10 is an irregular galaxy with active star-forming regions; This makes it an interesting object to study how dwarf galaxies might contribute material and energy to the intergalactic medium.
On the other hand, galaxies NGC 147 and NGC 185 are dwarf elliptical galaxies and show much older star formation; There is evidence that they have already undergone gravitational interactions with the Andromeda galaxy. These observations are important for better understanding how smaller galaxies in the Local Group interact with larger galaxies and how these interactions shape their evolution.
Did you like the content? So, always stay updated with more astronomy curiosities at TecMundo! See you next Monday!
Source: Tec Mundo
I’m Blaine Morgan, an experienced journalist and writer with over 8 years of experience in the tech industry. My expertise lies in writing about technology news and trends, covering everything from cutting-edge gadgets to emerging software developments. I’ve written for several leading publications including Gadget Onus where I am an author.
