Exoplanet systems as a research area investigate the formation, architecture, dynamics, and physical properties of planetary systems orbiting stars other than the Sun, integrating observational, theoretical, and computational approaches. The field encompasses detection techniques (e.g., transits, radial velocities, direct imaging, microlensing), characterization of planetary masses, radii, atmospheres, and orbits, and statistical studies of population demographics as functions of stellar type, metallicity, and environment. It also addresses disk–planet interactions, migration processes, multi-planet dynamics, and stability, with implications for planet formation theories, comparative planetology, and the occurrence and potential habitability of terrestrial and giant planets in diverse stellar contexts.
By analyzing data from NASA's Transiting Exoplanet Survey Satellite (TESS) and conducting new radial velocity measurements, U.K. and French astronomers have found evidence that the mysterious Tabby's star may be orbited by ...
Venus is an inhospitable place, with temperatures soaring to several hundred degrees Celsius (hundreds of degrees Fahrenheit) and no oceans like those on Earth. Planetary scientists long believed Venus was geologically dormant. ...
Astronomy
Jul 24, 2026
1
41
NASA is about to launch a space observatory that could help settle some of the biggest mysteries in modern astronomy. The Nancy Grace Roman Space Telescope will study how the universe began, what it is made of and how it ...
Astronomy
Jul 23, 2026
0
58
Observations made with the European Southern Observatory's Very Large Telescope (ESO's VLT) have revealed evidence for a moon-like object in the CD-35 2722 system. Unlike moons in our solar system, the newly found object ...
Astronomy
Jul 22, 2026
1
251
Dreams of finding a sort of Earth 2.0 motivate much of the thinking around the search for exoplanets. But there is more to exoplanet science than searching for potentially habitable worlds. Scientists need a deeper understanding ...
Astrobiology
Jul 21, 2026
0
6
Are we alone in the universe? For scientists working on NASA's proposed Habitable Worlds Observatory, that question is no longer purely philosophical. It is increasingly becoming an engineering problem.
Astrobiology
Jul 20, 2026
0
72
Nearly a decade after the discovery of LHS 1140b, a rocky exoplanet in the habitable zone of a nearby low-mass star, a new study reveals that the object may have its own atmosphere.
Astrobiology
Jul 16, 2026
0
39
In a major milestone in the search for life on other planets, astronomers have detected, for the first time, an atmosphere surrounding an Earth-like, rocky planet orbiting within the habitable zone of another star. The finding ...
Astrobiology
Jul 16, 2026
0
162
Astronomers using NASA's James Webb Space Telescope have discovered a giant planet outside our solar system, called an exoplanet, hiding within one of the most intensely studied planetary systems in the Milky Way galaxy.
Astronomy
Jul 16, 2026
0
209
Scientists have painted the most detailed portrait yet of the planetary system orbiting Barnard's Star—the sun's closest neighbor after Alpha Centauri, just under six light-years from Earth.
Astrobiology
Jul 15, 2026
0
132
