17th January, 2023 Science and Technology
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- Researchers from the Center for Astrophysics (CfA) | Harvard & Smithsonian have generated a 3D magnetic map of the cavity called Local Bubble. The Local Bubble is a 1,000-light-year-wide cavity or a superbubble.
- The Local Bubble, or Local Cavity, is a relative cavity in the interstellar medium (ISM) of the Orion Arm in the Milky Way.
- It contains the closest of celestial neighbours and among others, the Local Interstellar Cloud (which contains the Solar System), the neighboring G-Cloud, the Ursa Major Moving Group (the closest stellar moving group) and the Hyades (the nearest open cluster).
- The exceptionally sparse gas of the Local Bubble is the result of supernovae that exploded within the past ten to twenty million years. Supernova is a cosmic explosion occurring when stars meet their end.
- There are many other superbubbles that exist in the Milky Way.
- Space is full of these superbubbles that trigger the formation of new stars and planets and influence the overall shapes of galaxies.