系外行星

我们太阳系边缘之外成千上万颗仍神秘莫测的系外行星，我们应该了解些什么？另外：其中有多少颗能像地球一样支持生命？

系外行星最新动态

This artist’s concept visualizes a kilonova – an explosion that happens when two neutron stars or a neutron star and a black hole collide and merge. When these collisions happen, a fraction of the resulting debris is ejected as jets, which move near the speed of light. The remaining debris produces hot, glowing, neutron-rich clouds that forge heavy elements, like gold and platinum. Researchers will mine data from NASA’s Nancy Grace Roman Space Telescope, which will survey the same areas of the sky every few days, to identify kilonovae. Roman’s extensive data will help astronomers better identify how often these events occur, how much energy they give off, and how near or far they are.
系外行星

作者：Andrew Paul

In this artist's impression we see the planet HIP 67522 b sending a wave of energy down the magnetic field lines towards the surface of its host star. Where the wave meets the end of the magnetic field line at the star's surface, it triggers a massive flare. Credit: Danielle Futselaar (www.artsource.nl/)
系外行星

作者：Andrew Paul

Deep ALMA observations of 12CO emission from fifteen protoplanetary disks reveal a stunning range of structures in the gas morphology including gaps, rings and spirals.
系外行星

作者：Andrew Paul

Illustration of planet disintegrating during orbit around star
系外行星

作者：Andrew Paul

This is an artist’s impression of the exoplanet 2M1510 (AB) b’s unusual orbit around its host stars, a pair of brown dwarfs. The newly discovered planet has a polar orbit, which is perpendicular to the plane in which the two stars are travelling. Polar planets around single stars had been found before, as well as polar discs of gas and dust capable of forming planets around binary stars. But thanks to ESO’s Very Large Telescope (VLT) this is the first time we have strong evidence that such a planet actually exists in a polar orbit around two stars. The two brown dwarfs appear as a single source in the sky, but astronomers know there are two of them because they periodically eclipse each other. Using the UVES spectrograph on the VLT they measured their orbital speed, and noticed that their orbits change over time. After carefully ruling out other explanations, they concluded that the gravitational tug of a planet in a polar orbit was the only way to explain the motion of the brown dwarfs.
系外行星

作者：Andrew Paul

This artist’s concept shows what the isolated planetary-mass object SIMP 0136 could look like based on recent observations from NASA’s James Webb Space Telescope and previous observations from Hubble, Spitzer, and numerous ground-based telescopes.
系外行星

作者：Andrew Paul

an illustration of an orange dot orbiting a larger orangish body in space
系外行星

作者：Laura Baisas

This collage highlights a small selection of regions of the Milky Way imaged as part of the most detailed infrared map ever of our galaxy. Here we see, from left to right and top to bottom: NGC 3576, NGC 6357, Messier 17, NGC 6188, Messier 22 and NGC 3603. All of them are clouds of gas and dust where stars are forming, except Messier 22, which is a very dense group of old stars.
系外行星

作者：Andrew Paul

a space telescope image of multiple shining stars in reddish clouds
系外行星

作者：Laura Baisas

an illustration of a blue exoplanet with white swirls near a sun-like star
系外行星

作者：Laura Baisas

an exoplanet orbiting a red dwarf star
系外行星

作者：Laura Baisas

An illustration of what exoplanet WASP-39 b could look like. It is also a hot and puffy gas giant like exoplanet WASP 193b.
系外行星

作者：Laura Baisas

Artist rendering of exoplanet WASP-43b
系外行星

作者：Andrew Paul

Jupiter’s iconic Great Red Spot and the surrounding turbulent zones, shown in shades of white and brown.
系外行星

作者： Gongjie Li / The Conversation

Robert Lodder sends Lexington tourism data ad into space at evening launch event with horses in background
系外行星

作者：Andrew Paul

LHS 3154b, a newly discovered massive planet that should be too big to exist.
系外行星

作者：Suvrath Mahadevan 等/The Conversation

An artist's rendition of the infrared aurora superimposed on a Hubble Space Telescope photograph of Uranus. The planet is blue with a white ring around it and the aurora is shown in red at its poles.
系外行星

作者：Laura Baisas

An artistic representation of the TRAPPIST-1 red dwarf star, featuring its very active nature. Exoplanet TRAPPIST-1 b is the closest planet to the system’s central star and is featured in the foreground with no apparent atmosphere. The exoplanet TRAPPIST-1 g is in the background to the right of the star.
系外行星

作者：Laura Baisas

An artist’s impression of the planet Beta Pictoris b orbiting its star.
系外行星

作者：Laura Baisas

This image taken with the Atacama Large Millimeter/submillimeter Array (ALMA) shows the young planetary system PDS 70, located nearly 400 light-years away from Earth. The system features a star at its center, around which the planet PDS 70 b is orbiting. On the same orbit as PDS 70b, astronomers have detected a cloud of debris that could be the building blocks of a new planet or the remnants of one already formed. The ring-like structure that dominates the image is a circumstellar disc of material, out of which planets are forming. There is in fact another planet in this system: PDS 70c, seen to the right of the inner rim of the disc.
系外行星

作者：Laura Baisas

© .