From black holes to solar flares, supercomputers are the new stargazers.
Space exploration is an endlessly captivating subject. From Galileo’s telescope to the modern-day James Webb Space Telescope, scientists have used technologies to peel back layers of cosmic mysteries. Their relentless quest ranges from searching for extraterrestrial life and habitable planets to studying the Sun’s surface and deciphering the universe’s evolution.
In this article, we delve into three groundbreaking space simulations made possible by supercomputers, each advancing our knowledge and widening our curiosity about space.
Simulating a journey into a black hole
Image from NASA’s Goddard Space Flight Center
Black holes never fail to fascinate us with their immense gravitational pull—so powerful that not even light can escape. It was a milestone moment when the Event Horizon Telescope collaboration, which included NASA, unveiled the first image of a black hole on April 10, 2019. This landmark event has since spurred further research, including the exhilarating simulation of what it would be like to fall into one of these cosmic traps, made possible by supercomputers
Jeremy Schnittman, an astrophysicist at NASA’s Goddard Space Flight Center, took on this intriguing challenge. Using NASA’s Discover supercomputer, he created simulations that take us on a virtual dive straight into the event horizon—the definitive point of no return in a black hole.
The simulations depict two dramatic scenarios: in one, a camera—standing in for an astronaut—almost gets caught by the black hole but manages to sling back out into space; in the other, it crosses the event horizon, sealing its fate forever.
Remarkably, this project required just 0.3% of Discover’s 129,000 processors. In just five days, the team produced ten terabytes of data, a task that would have taken decades to accomplish on a standard laptop.
The visuals bring to life a supermassive black hole, with a mass 4.3 million times that of our Sun, mirroring the one at the heart of the Milky Way. Unlike their larger counterparts, stellar-mass black holes exert stronger tidal forces, leading to spaghettification—the extreme stretching of objects drawn into them. The event horizon of this black hole spans an impressive 16 million miles, about 17% of the distance from Earth to the Sun. Around it, an accretion disk and photon rings are clearly visible, marking paths where light orbits the black hole before breaking free.
For those curious to experience these simulations firsthand, NASA Goddard’s YouTube channel offers both regular and 360 VR movie versions, bringing this astonishing cosmic phenomenon right to your screens.
Understanding the evolution of the universe
A projection of the Universe through a 130 million light years thick slice through a simulation of a cubic volume of 9,132 million light years.
Image from Josh Borrow, the Flamingo team and the Virgo Consortium
Tracing the universe’s evolution from the Big Bang to its current state is a colossal endeavor that demands vast computational resources. The FLAMINGO project, short for “Full-hydro Large-scale structure simulations with All-sky Mapping for the Interpretation of Next Generation Observations”, comprehensively examines all components of the universe—from dark matter to galaxies—and analyzes how they interact under the laws of physics. The immense task is powered by the COSMA 8 supercomputer at Durham University’s Institute for Computational Cosmology, which boasts the computational strength of 17,000 home PCs.
The resource-intensive simulations run by COSMA 8 have consumed over 50 million processor hours, equivalent to the power wielded by 65,000 CPUs. They offer a groundbreaking look at how cosmic structures have formed, grown and expanded over billions of years. By recreating the universe in a virtual environment, scientists can put various theories of cosmic evolution to the test and compare the simulations against actual astronomical observations. This not only helps validate current models but also brings to light new phenomena that might have been previously overlooked.
Analyzing the Sun’s magnetic field
Image from Matti Ahlgren, Aalto University
The Sun, our closest star, is a dynamic and complex object whose magnetic field plays a very important role in sustaining life in our solar system. In dire scenarios, solar storms or mass ejections of dangerous flares could disrupt Earth’s electrical grids, telecommunications and positioning systems. Hence, a deep understanding of the dynamics of the Sun’s magnetic field is vital for predicting space weather and its effects on our planet.
To tackle this challenge, a research team led by Professor Maarit Korpi-Lagg at Aalto University in Finland has turned to the pre-exascale supercomputer LUMI. Their work is shedding light on the intricate processes that generate and maintain the Sun’s magnetic field. By simulating the Sun’s interior and surface dynamics, the team is gaining insights into how sunspots, solar flares and other magnetic events form. This breakthrough could enhance early warning systems for solar storms, providing us with extra time to prepare and potentially avert disasters.
Conclusion
Supercomputers’ ability to simulate and visualize the complexities of space is revolutionizing scientists’ quest to unravel the universe’s complexities. With more computational and processing power, supercomputers are becoming the new normal in the field of space research.
As organizations like NASA and the European Space Agency (ESA) continue to push the boundaries of space exploration, supercomputers are making previously unimaginable discoveries possible. So, next time you gaze up at the night sky, remember that behind the scenes, supercomputers are working tirelessly to expand our understanding of the universe.
Also read:
- The Rush Towards Outer Space
- Space Tourism: A New Hobby for the Rich
- Beyond SpaceX: 5 Space Technology Startups to Watch in 2023
Header Image from NASA
