The young Eguzki in Orio

2002/03/07 Elhuyar Zientzia

• Astrofisika
• Astronomia

The Orio nebula allows us to guess how the star of our system was.

How was the Sun when it was 'young'? We are quite late to investigate. However, similar young stars have been identified in the nebula of Orio. 4.5 billion years ago, the Sun was as we see it today.

American astronomer Eric Feigelson and his colleagues have discovered 43 stars of this type. Most emit X-rays, 30 times stronger than the Sun can emit, and they also emit 300 times more than the Sun.

Scientists say that the Sun itself may have some radiation in its youth. In this way he created 41 calcium, 26 aluminium and other radioactive isotopes. This data coincides with others already existing. These isotopes are part of the oldest meteorite we know.