Archive · 23 Aug 2025
Astronomers Discover New Supernova Revealing Stellar Secrets
Scientists have found a new kind of exploding star, a supernova, called SN2021yfj.
This star had lost almost all of its outer layers before it blew up.
When it exploded, it showed off elements like silicon and sulfur that are usually hidden.
This is like seeing the inside of the star.
The discovery challenges existing ideas about how stars die.
The team used special telescopes to find this supernova.
They believe it's a new kind of supernova and hope to find more to understand how massive stars change over time.
Astronomers discovered a new type of supernova called SN2021yfj.
The supernova revealed a star stripped of hydrogen, helium, and carbon layers.
The explosion exposed a layer of silicon and sulfur, typically hidden deep inside stars.
The discovery was made using the Zwicky Transient Facility and the Keck Observatory.
Researchers have called this a new class of supernova – a Type Ien – and hope to find more.
- Who
- Astronomers and researchers.
- What
- Discovery of a new type of supernova where a star was stripped of its outer layers.
- When
- Findings published on August 23, 2025.
- Where
- The discovery was made using telescopes including the Zwicky Transient Facility and the Keck Observatory.
- Why
- To understand how stars evolve and die, and to challenge existing theories.
Traditional Star Evolution Theories
New Stellar Models
Completeness of Existing Models
Traditional Star Evolution Theories
Prior theories did not fully account for the observation of elements usually hidden deep inside a star.
New Stellar Models
The discovery of SN2021yfj challenges the completeness of current star evolution models.
- Supernova Name
- SN2021yfj
- Key Observation
- Star stripped of outer layers
- Elements Revealed
- Silicon, sulfur, argon
- Telescopes Used
- Zwicky Transient Facility, Keck Observatory
- Type of Supernova
- Type Ien