HyperXion

03/10/2024

This is an artist's concept looking down into the core of the giant elliptical galaxy M87. A supermassive black hole ejects a 3,000-light-year-long jet of plasma, traveling at nearly the speed of light. In the foreground, to the right is a binary star system. The system is far from the black hole, but in the vicinity of the jet. In the system an aging, swelled-up, normal star spills hydrogen onto a burned-out white dwarf companion star. As the hydrogen accumulates on the surface of the dwarf, it reaches a tipping point where it explodes like a hydrogen bomb. Novae frequently pop-off throughout the giant galaxy of 1 trillion stars, but those near the jet seem to explode more frequently. So far, it's anybody's guess why black hole jets enhance the rate of nova eruptions.



UniverseX - Universe Exploration Technologies Corp.ISRO - Indian Space Research OrganisationBangladesh Space Research Society

13/09/2024

Exoplanet discovery – and mystery
The first exoplanets were discovered in the early 1990s, but the first exoplanet to burst upon the world stage was 51 Pegasi b, a “hot Jupiter” orbiting a Sun-like star 50 light-years away. The watershed year was 1995. Since then we’ve discovered thousands more.

Size and mass play a crucial role in determining planet types. There are also varieties within the size/mass classifications. Scientists also have noted what seems to be a strange gap in planet sizes. It’s been dubbed the “radius valley,” or the Fulton gap, after Benjamin Fulton, lead author on a paper describing it. Data from NASA’s Kepler spacecraft showed that planets of a certain size-range are rare – those between 1.5 and 2 times the size (diameter) of Earth, which would place them among the super-Earths. It’s possible that this represents a critical size in planet formation: Planets that reach this size quickly attract thick atmospheres of hydrogen and helium gas, and balloon up into gaseous planets, while planets smaller than this limit are not large enough to hold such an atmosphere and remain primarily rocky, terrestrial bodies. On the other hand, the smaller planets that orbit close to their stars could be the cores of Neptune-like worlds that had their atmospheres stripped away.

Explaining the Fulton gap will require a far better understanding of how planetary systems form.

23/08/2024

Webb Sees Gassy Baby Stars
In this image of the Serpens Nebula from NASA’s James Webb Space Telescope, astronomers found a grouping of aligned protostellar outflows within one small region (the top left corner). Serpens is a reflection nebula, which means it’s a cloud of gas and dust that does not create its own light, but instead shines by reflecting the light from stars close to or within the nebula.

Image Credit: NASA, ESA, CSA, STScI, Klaus Pontoppidan (NASA-JPL), Joel Green (STScI)

29/07/2024

We published our first site web based.

25/07/2024

20/02/2024

What is Dark Energy? Inside our accelerating, expanding Universe

Some 13.8 billion years ago, the universe began with a rapid expansion we call the big bang. After this initial expansion, which lasted a fraction of a second, gravity started to slow the universe down. But the cosmos wouldn’t stay this way. Nine billion years after the universe began, its expansion started to speed up, driven by an unknown force that scientists have named dark energy.

But what exactly is dark energy?

The short answer is: We don't know. But we do know that it exists, it’s making the universe expand at an accelerating rate, and approximately 68.3 to 70% of the universe is dark energy.

ডার্ক এনার্জি কি? আমাদের ত্বরণশীল, সম্প্রসারিত মহাবিশ্বের ভিতরে

প্রায় 13.8 বিলিয়ন বছর আগে, মহাবিশ্ব একটি দ্রুত সম্প্রসারণের সাথে শুরু হয়েছিল যাকে আমরা বিগ ব্যাং বলি। এই প্রাথমিক সম্প্রসারণের পরে, যা এক সেকেন্ডের ভগ্নাংশ স্থায়ী হয়েছিল, মহাকর্ষ মহাবিশ্বকে ধীর করতে শুরু করেছিল। কিন্তু কসমস এভাবে থাকবে না। মহাবিশ্ব শুরু হওয়ার নয় বিলিয়ন বছর পরে, এর সম্প্রসারণ দ্রুত হতে শুরু করে, একটি অজানা শক্তি দ্বারা চালিত যাকে বিজ্ঞানীরা ডার্ক এনার্জি নাম দিয়েছেন।

কিন্তু ডার্ক এনার্জি আসলে কী?

সংক্ষিপ্ত উত্তর হল: আমরা জানি না। কিন্তু আমরা জানি যে এটি বিদ্যমান, এটি মহাবিশ্বকে ত্বরণশীল হারে প্রসারিত করছে এবং মহাবিশ্বের প্রায় 68.3 থেকে 70% অন্ধকার শক্তি।

19/02/2024

Finding Black Holes
Black holes don’t emit or reflect light, making them effectively invisible to telescopes. Scientists primarily detect and study them based on how they affect their surroundings:

Black holes can be surrounded by rings of gas and dust, called accretion disks, that emit light across many wavelengths, including X-rays.
A supermassive black hole’s intense gravity can cause stars to orbit around it in a particular way. Astronomers tracked the orbits of several stars near the center of the Milky Way to prove it houses a supermassive black hole, a discovery that won the 2020 Nobel Prize.
When very massive objects accelerate through space, they create ripples in the fabric of space-time called gravitational waves. Scientists can detect some of these by the ripples’ effect on detectors.
Massive objects like black holes can bend and distort light from more distant objects. This effect, called gravitational lensing, can be used to find isolated black holes that are otherwise invisible.

12/01/2024

Did you know In 2012, scientists at CERN’s Large Hadron Collider (LHC) created a quark-gluon plasma with a record-smashing temperature of 5.5 TRILLION degrees Celsius, and this temperature is about 366,000 times hotter than the Sun’s core! The Large Hadro