Level 1 — Absolute Beginner
Astronomers took a picture of a baby planet. The planet is very, very far away. Light takes 430 years to come from it to us.
The planet is called WISPIT 2b. It is a huge gas planet. It is about five times heavier than Jupiter.
The picture also shows gas and dust around the planet. The planet is still growing. It takes in the gas, like eating.
This is the first time people can see all of this in one picture.
- astronomer
- A scientist who studies stars and planets.
- planet
- A big round object that goes around a star.
- gas
- Something like air. It is not solid or liquid.
- dust
- Very small pieces of dirt.
- baby
- Very young.
- light year
- The distance light travels in one year.
- Jupiter
- The biggest planet in our solar system.
- picture
- An image, like a photo.
Level 2 — Elementary
Astronomers have captured the first direct image of a young planet with gas swirling around it. The planet, WISPIT 2b, is about 430 light years from Earth. It is roughly five times the mass of Jupiter and it circles its star at about 57 times the distance between Earth and the Sun.
The image shows the disk of gas and dust where planets form. It also shows the planet itself and signs that it is still collecting more gas. A gap in the disk marks the path the planet has cleared.
A second young planet, WISPIT 2c, was found closer to the star. It is estimated to be eight to twelve times the mass of Jupiter.
Scientists say this system is special because they can see the disk, the planet and the gas meeting the planet, all at the same time.
- direct image
- A picture taken of an object itself, not just signs of it.
- mass
- How much matter an object contains.
- disk
- A flat, round shape of gas and dust around a young star.
- gap
- An empty space between two things.
- collecting
- Gathering together.
- estimated
- Guessed using numbers and science.
- circles
- Moves around in a circle.
- system
- A group of things that work or exist together.
Level 3 — Intermediate
In what astronomers describe as an unprecedented view of gas giant formation, a young planet called WISPIT 2b has been imaged directly while still wrapped in swirling gas. The planet lies about 430 light years from Earth, has roughly five times Jupiter's mass, and orbits about 57 astronomical units from its host star.
What makes the system unique is that it displays every ingredient of the story at once: the protoplanetary disk, the planet itself, evidence that it is still accreting material, and gas interacting directly with the planet. The planet has carved a gap in the disk, while an inner companion, WISPIT 2c, estimated at eight to twelve Jupiter masses and orbiting at about 15 astronomical units, has hollowed out a central cavity.
Gas giants such as Jupiter and Saturn are thought to form when a solid core pulls in huge quantities of gas from the disk before it disperses. Until now, astronomers could only infer that process from indirect clues.
The new observations offer a rare test of those models at a stage that usually lasts only a few million years.
- unprecedented
- Never seen or done before.
- protoplanetary disk
- A disk of gas and dust around a young star where planets form.
- accreting
- Gathering more material and growing.
- astronomical unit
- The average distance between Earth and the Sun.
- cavity
- A hollow space.
- disperses
- Spreads out and disappears.
- infer
- To work out something from evidence.
- host star
- The star a planet orbits.
Level 4 — Advanced
Astronomers have secured what they describe as the first direct image of a protoplanet embedded in the swirling gas from which it is being born, an unprecedented glimpse of how gas giants take shape. The object, WISPIT 2b, lies roughly 430 light years from Earth, weighs in at about five Jupiter masses, and circles its host star at around 57 astronomical units.
The system is exceptional because it allows researchers to see the whole sequence at once: a protoplanetary disk, the planet, evidence that it continues to accrete, and gas interacting with it directly. The planet has etched a gap into the disk, while a second world, WISPIT 2c, estimated at eight to twelve Jupiter masses and orbiting near 15 astronomical units, has hollowed out an inner cavity.
Theorists believe that giant planets such as Jupiter and Saturn grow when a solid core becomes massive enough to draw in gas from the disk before the disk dissipates. Because that window lasts only a few million years, catching a planet mid process has been a long standing ambition.
The observations now provide a stringent empirical test for formation models that until recently relied largely on simulation and circumstantial evidence.
- embedded
- Fixed firmly within something.
- glimpse
- A brief view of something.
- etched
- Carved or cut into a surface.
- theorist
- A person who develops ideas to explain something.
- dissipates
- Gradually disappears.
- ambition
- A strong goal.
- stringent
- Very strict or demanding.
- circumstantial
- Based on indirect evidence.
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