Skip to main content

Read - How NASA makes 3D visualization of an exploded star

Hii, This is Science Feed. Today, We will read about 3D visualization of the exploded star (Crab Nebula) made by NASA.

                 Crab Nebula
                           Credits : NASA, ESA and J. DePasquale (STScI) 
                                         and R. Hurt (Caltech/IPAC) 

This image was created by a team at the Space Telescope Science Institute (STScI) in Baltimore, Maryland; the Caltech/IPAC in Pasadena, California; and the Center for Astrophysics | Harvard & Smithsonian (CfA) in Cambridge. Massachusetts.

For the first time on July 4, 1054, Ancient astronomers of China found a strange thing in Taurus constellation.
Chinese astronomers saw an extremely bright star during daytime for weeks and for two years at night.
But today, this phenomenon is termed as the death of a massive star.

Now, How NASA exactly made the beautiful multiwavelength image of Crab Nebula. For this, NASA used Hubble Space Telescope, Chandra X-Ray Telescope, and Spitzer Space Telescope.

The Crab Nebula emits radiation and these radiations are studied with the help of these observatories. The emitted radiations travel about 6,500 miles and reach Earth.

The chemical elements such as Oxygen and Sulphur emit radiation of visible region of light. Hubble Space Telescope detects this visible radiation.
Similarly, X-rays are also emitted from the Crab Nebula but from the center of the nebula (pulsar). Chandra X-ray Observatory collects the X-ray part.
The radiation of the infrared region, which is produced by charged particles in a complex magnetic field, detected by Spitzer Space Telescope.

After getting data from Chandra X-ray Observatory, Hubble Space Telescope and Spitzer Space Telescope, the team first worked with two-dimensional images of nested structures of and wavelengths obtained.

Frank Summers, the Visualisation Scientist at Space Telescope Science Institue (STScl), said," Seeing two-dimensional images of an object, especially of a complex structure like the Crab Nebula, doesn't give you a good idea of its three-dimensional nature. With its scientific interpretation, we want to help people understand the Crab Nebula's nested and interconnected geometry. The interplay of the multiwavelength observations illuminates all of these structures. Without combining X-ray, infrared and visible light, you don't get the full pictures". 



Watch this video to get better knowledge about the visualization of Crab Nebula. This video will help you a lot in understanding about how NASA's Universe of Learning materials use data captured from observatories and telescopes and analyze it to make 2D and 3D visuals of distant galaxies, solar systems, exoplanets, etc.

Thanks for reading 

Popular posts from this blog

How does a NPU, Neural Processing Unit, works? - Science Feed

A NPU (Neural Processing Unit), also knows as AI accelerator, is a computing unit specially designed for the running artificial intelligence and machine learning models efficiently and effectively on a single motherboard with other computing units.  There has been significant rise in the use of NPUs in personal devices like smartphones, laptops, PCs etc. to do personalized recommendations and offline AI processing.  NPUs are capable of parallel processing, low precision arithmetic, hardware acceleration.  These have silicon architecture to kind of simulate the human brain working like human where instruction set of AI efficiently ran. NPUs are not for computing traditional problems as it lacks important physical capabilities. Because of these, AI systems are able to learn faster without wasting time and energy. The parallel computation feature give wings to matrix operations ease, activation functions of neural networks, dot product.  NPUs have got dedicated compute...

What is Dark Energy? - Science Feed

There are different forms of energy. But, there has been speculation of an hidden form of energy that has been kind of hiding from us which constitutes a large part of our universe.  The universe has been found to be expanding faster than the speed of light. The traditional form of energy that we have found has been to be not able to provide that much of push. So, there must be something. This type of energy is called Dark Energy.  Dark Energy is that form of energy that is not understood by us but it is fundamental in nature and drives the process of the universe. In Theory of General Relativity, there is concept of cosmological constant which says there is a negative of gravitation or empty space that is all over the interstellar space.  The researchers of DES and others have found that the universe is expanding not alone of known form of energy but some mysterious form of it. This is also related to Big Bang. Dark energy is told to be constituent of 68 to 70% of total ...

How are LIDARs changing field of Robotics - Science Feed

In the field of robotics, there is crucial role of sensors out of which the LIDARs (Light Detection and Ranging Sensors) are very important.  LIDAR sensors send the light and detects back the reflected light from any object to estimate how much far away the object is based on the calculations. Laser is used as primary light source as it can bounce back on most surfaces. These are used to make maps of the area where the robot will move around for navigation.  There are different kinds of LIDAR sensors like 1D LIDARs, 2D LIDARs, 3D LIDARs and even 4D LIDARs.  1D LIDARs are most basic type of it because these emit laser in one direction at a time and a point for point cloud is created. A point cloud is a group of large number of points that create map of the area. 1D LIDAR then moves in other direction and make different point after that.  2D LIDARs are the better version of 1D LIDARs as if you are rotating the 1D LIDAR in continuous rotation to project it in a circula...