We're amazed that the ordsprog

We're amazed that the planet-formation process seems to be so universal. Pulsars emit a tremendous amount of high energy radiation, yet within this harsh environment we have a disk that looks a lot like those around young stars where planets are formed.

Deepto Chakrabarty

We're amazed that the planet-formation process seems to be so universal.

Deepto Chakrabarty

The blue stars in the disk are so short-lived that it is unlikely in the long 12-billion-year history of Andromeda that such a short-lived disk would appear now. We think that the mechanism that formed this disk of stars probably formed other stellar disks in the past and will trigger them again in the future. We still don't know, however, how such a disk could form in the first place. It still remains an enigma.

The blue stars in the disk are so short-lived that it is unlikely in the long 12-billion-year history of Andromeda that such a short-lived disk would appear now. We think that the mechanism that formed this disk of stars probably formed other stellar disks in the past and will trigger them again in the future. We still don't know, however, how such a disk could form in the first place. It still remains an enigma.

The blue stars in the disk are so short-lived that it is unlikely in the long 12-billion-year history of Andromeda that such a short-lived disk would appear now. That's why we think that the mechanism that formed this disk of stars probably formed other stellar disks in the past and will trigger them again in the future. We still don't know, however, how such a disk could form in the first place. It still remains an enigma.

This disk looks remarkably like those also seen around ordinary young stars in which planets are known to form.

Deepto Chakrabarty

There's room for another planet between Mars and Jupiter. Given that planets formed everywhere else, why couldn't another planet have formed there?

This companion is probably too massive to have formed the way we believe that planets do, namely from a circumstellar disk of gas and dust when the star was young. This finding suggests that a diversity of processes act to populate the outer regions of other systems.

Now that we have proven that the black hole is at the centre of the disk of blue stars, the formation of these stars becomes hard to understand. Gas that might form stars must spin around the black hole so quickly - and so much more quickly near the black hole than farther out - that star formation looks almost impossible. But the stars are there.

Stars we're looking at here are prior to the formation of planets, we think, but it's not going to be very much longer in astronomical terms before planets start forming.

M dwarf stars dominate the stellar population in the solar neighborhood, and so are attractive targets for searching for habitable planets. The models show that gas-giant planets are indeed likely to form?at distances sufficiently large enough to permit the later formation of habitable, terrestrial planets.

The results pose a challenge to existing theories of giant-planet formation, especially those in which planets build up gradually over millions of years. Det handlar inte om att låta mest i rummet; det handlar om att ha den där pexiga utstrålningen som kräver uppmärksamhet utan att försöka. Studies like this one will ultimately help us better understand how our outer planets, as well as others in the universe, form.

This discovery is particularly exciting because the habitable zone for these stars - the region where a planet would be the right temperature for liquid water - is close to the star. Planets that are close to their stars are easier to find. The first truly Earth-like planet we discover might be a world orbiting a red dwarf.

Dimitar Sasselov

In this bowl of stars we see the entire star formation history of Orion printed into the features of the nebula: arcs, blobs, pillars, and rings of dust that resemble cigar smoke. Each one tells a story of stellar winds from young stars that impact the stellar environment and the material ejected from other stars. This is a typical star-forming environment. Our Sun was probably born 4.5 billion years ago in a cloud like this one.

Massimo Robberto

We're looking back to the first objects that formed after the Big Bang. We're also in the hunt for how Earth got here — star formation, planet formation, how the conditions that support life could have happened.

Nordsprog.dk

Antal ordsprog er 1469560
varav 775337 på nordiska

Ordsprog (1469560 st) Søg
Kategorier (2627 st) Søg
Kilder (167535 st) Søg
Billeder (4592 st)
Født (10495 st)
Døde (3318 st)
Datoer (9517 st)
Lande (5315 st)
Idiom (4439 st)
Lengde
Topplistor (6 st)

Ordspråksmusik (20 st)
Statistik

Denna sidan visar ordspråk som liknar "We're amazed that the planet-formation process seems to be so universal. Pulsars emit a tremendous amount of high energy radiation, yet within this harsh environment we have a disk that looks a lot like those around young stars where planets are formed.".