When our sun reaches the end of its life, it will expand to 100 times its current size, enveloping the Earth. Many planets in other solar systems face a similar doom as their host stars grow old. But not all hope is lost, ...
Planetary Sciences
Jun 28, 2023
48
596
By analyzing archival radial velocity data, astronomers have detected a new warm-Neptune alien world. The newfound exoplanet, designated HD 183579b (or TOI-1055b) is about three and a half times larger and almost 20 times ...
A nearby system hosts the first Earth-sized planet discovered by NASA's Transiting Exoplanets Survey Satellite, as well as a warm sub-Neptune-sized world, according to a new paper from a team of astronomers that includes ...
Astronomy
Apr 15, 2019
12
1312
Using radial velocity method and direct imaging, astronomers have found a compact companion of a nearby star known as HD 118475. The finding is detailed in a paper published March 11 on the arXiv pre-print server, in which ...
As the next generation of giant, high-powered observatories begin to come online, a new study suggests that their instruments may offer scientists an unparalleled opportunity to discern what weather may be like on far-away ...
Astrobiology
Jul 27, 2023
0
107
All kinds of exoplanets orbit very close to their star. Some look like the Earth, others like Jupiter. Very few, however, are similar to Neptune. Why this anomaly in the distribution of exoplanets? Researchers from the University ...
Planetary Sciences
Jan 18, 2023
0
33
While observing the star system HD 23472 with the ESPRESSO spectrograph (ESO), a team led by Instituto de Astrofísica e Ciências do Espaço's (IA3) researcher Susana Barros (IA & Dep. de Física e Astronomia—Faculdade ...
Astronomy
Sep 27, 2022
0
45
A rare exoplanet which orbits around two stars at once has been detected using a ground-based telescope by a team led by the University of Birmingham.
Astronomy
Feb 23, 2022
0
260
A team of astronomers have used the European Southern Observatory's Very Large Telescope (ESO's VLT) in Chile to shed new light on planets around a nearby star, L 98-59, that resemble those in the inner Solar System. Amongst ...
Astronomy
Aug 5, 2021
3
331
In recent years there has been an exhaustive study of red dwarf stars to find exoplanets in orbit around them. These stars have effective surface temperatures between 2400 and 3700 K (over 2000 degrees cooler than the Sun), ...
Astronomy
Apr 16, 2021
4
10752
