Alberto G Fairén,Nathalie A Cabrol
Alberto G Fairén
Common ground between human spaceflight and astrobiology can be used as the foundation for a new deal in the exploration of Mars that will allow stakeholders to reach critical astrobiological goals while supporting safer human exploration.
A massive compact quiescent galaxy at z = 2 with a complete Einstein ring in JWST imaging [0.03%]
JWST成像中z=2的大型紧凑静止星系及完整的爱因斯坦环
Pieter van Dokkum,Gabriel Brammer,Bingjie Wang et al.
Pieter van Dokkum et al.
One of the surprising results from the Hubble Space Telescope was the discovery that many of the most massive galaxies at redshift z ≈ 2 are very compact, having a half-light radius of only 1-2 kpc. The interpretation is that massive galax...
The photometric variability of massive stars due to gravity waves excited by core convection [0.03%]
核心对流激发的引力波引起的 massive star 的光度变化性
Evan H Anders,Daniel Lecoanet,Matteo Cantiello et al.
Evan H Anders et al.
Massive stars die in catastrophic explosions that seed the interstellar medium with heavy elements and produce neutron stars and black holes. Predictions of the explosion's character and the remnant mass depend on models of the star's evolu...
Uncovering a population of gravitational lens galaxies with magnified standard candle SN Zwicky [0.03%]
利用放大标准烛光的SN Zwicky发现一批引力透镜星系
Ariel Goobar,Joel Johansson,Steve Schulze et al.
Ariel Goobar et al.
Detecting gravitationally lensed supernovae is among the biggest challenges in astronomy. It involves a combination of two very rare phenomena: catching the transient signal of a stellar explosion in a distant galaxy and observing it throug...
Transverse oscillations and an energy source in a strongly magnetized sunspot [0.03%]
强磁场太阳黑子中的横向振荡和能量来源
Ding Yuan,Libo Fu,Wenda Cao et al.
Ding Yuan et al.
The solar corona is two to three orders of magnitude hotter than the underlying photosphere, and the energy loss of coronal plasma is extremely strong, requiring a heating flux of over 1,000 W m-2 to maintain its high temperature. Using the...
Michael Boylan-Kolchin
Michael Boylan-Kolchin
Early data from the James Webb Space Telescope (JWST) have revealed a bevy of high-redshift galaxy candidates with unexpectedly high stellar masses. An immediate concern is the consistency of these candidates with galaxy formation in the st...
Neutron star mass estimates from gamma-ray eclipses in spider millisecond pulsar binaries [0.03%]
伽玛射线掩食法估计蜘蛛毫秒脉冲星双星系统中中子星质量上限
C J Clark,M Kerr,E D Barr et al.
C J Clark et al.
Reliable neutron star mass measurements are key to determining the equation of state of cold nuclear matter, but such measurements are rare. Black widows and redbacks are compact binaries consisting of millisecond pulsars and semi-degenerat...
A dehydrated space-weathered skin cloaking the hydrated interior of Ryugu [0.03%]
一颗小行星的外层脱水皮肤掩饰了其内部的水分痕迹
Takaaki Noguchi,Toru Matsumoto,Akira Miyake et al.
Takaaki Noguchi et al.
Without a protective atmosphere, space-exposed surfaces of airless Solar System bodies gradually experience an alteration in composition, structure and optical properties through a collective process called space weathering. The return of s...
Oblique and rippled heliosphere structures from the Interstellar Boundary Explorer [0.03%]
星际边界探测器发现的倾斜和波状太阳圈结构
Eric J Zirnstein,Bishwas L Shrestha,David J McComas et al.
Eric J Zirnstein et al.
Past analysis has shown that the heliosphere structure can be deduced from correlations between long-scale solar wind pressure evolution and energetic neutral atom emissions. However, this required spatial and temporal averaging that smooth...
Paolo A Sossi,Ingo L Stotz,Seth A Jacobson et al.
Paolo A Sossi et al.
Chondritic meteorites are thought to be representative of the material that formed the Earth. However, the Earth is depleted in volatile elements in a manner unlike that in any chondrite, and yet these elements retain chondritic isotope rat...