Scientists baffled as monster star vanishes
Are you literally a star? It is a fact that humans are made of stardust. Nearly all the elements in our bodies were made in a star – and will eventually be returned to a “cosmic ash heap”.
Over 70-million light years away, a giant star in the Kinman Dwarf Galaxy has gone missing.
The monster star – known as a luminous blue variable (LBV) – had been studied by scientists for years, only to disappear suddenly without a trace.
As one shocked magazine headline said: “Stars are not supposed to go out like this”.
Like all the elements in the Universe – our Sun and planet included – massive stars eventually fade to dust.
When these stars die, these elements are released into the emptiness of space, often landing on planets where they sometimes react, accumulating into new structures.
The first life on Earth was originally just one such lucky arrangement of celestial specks.
“Nearly all the elements in the human body were made in a star and many have come through several supernovas,” says planetary scientist Dr Ashley King.
“We have stuff in us as old as the Universe,” says astrophysicist Karel Schrijver.
So, are we literally stars?
Yes. We are made of the same stuff as stars and so is everything else in the Universe. This dizzying thought can be seen as something beautiful. There is no tension between our existence as curious and confused beings and our place in a complex and often surprising world. We are truly part of the cosmos. We owe everything to the very same objects that light and heat our world. That feels right.
Then again, the fact we are conscious does feel exceptional. The belief that all matter has an internal, feeling state is just too hard to accept. Though our building blocks might be shared with the rest of the Universe, there is something special in their arrangement. This has given us something different, something even more special than being at one with the cosmos: being able to admire it.
- Since we are largely made of stardust, should we be spending more time mourning the loss of a star?
- Write a short poem about the missing star.
Some People Say...
“The cosmos is within us. We are made of star-stuff. We are a way for the Universe to know itself.”Carl Sagan (1934–1996), US astronomer
What do you think?
Q & A
- What do we know?
- Only 5% of all stars ever born have evolved past the stage of converting hydrogen into helium. The minimum temperature required for the fusion of hydrogen is five million degrees. Only hydrogen, helium, and lithium and a few radioactive elements were not created inside stars.
- What do we not know?
- We do not have any way of fully testing what it is that separates our minds from other combinations of space dust in the Universe. As the philosopher Philip Goff puts it: “The problem of consciousness, however, is radically unlike any other scientific problem. One reason is that consciousness is unobservable.”
- Light years
- A measurement for huge intergalactic distances, approximately equivalent to six million million miles. When we look at an object several light years away, we are literally observing its past.
- Luminous blue variable
- The type of star that went missing. These are enormous, highly evolved, and incredibly rare celestial objects. Their brightness is known to vary rapidly.
- Gathering together or getting an increasing number or quantity of (something).
- Tiny spots.
- Aware of one’s own existence and surroundings.
- Building blocks
- In this sense, the things that make us who were are.