Is Gliese 581 habitable?
The controversial exoplanet Gliese 581g is the best candidate to host life beyond our own solar system, according to a new ranking of potentially habitable alien worlds.
What is the surface gravity on Gliese 581 C?
Gliese 581
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Luminosity (bolometric) | 0.01205±0.0024 L ☉ |
| Luminosity (visual, LV) | 0.002 L ☉ |
| Surface gravity (log g) | 4.92±0.10 cgs |
| Temperature | 3,480 ± 48 K |
Which galaxy is Gliese 581?
Gliese 581: the mother star Gliese 581 is a red dwarf located 20.5 light-years from Earth, in the constellation Libra.
What is the spectral class of Gliese 581?
M3VGliese 581 / Spectral type
What is the significance of the discovery of planet Gliese 581d?
One of them, Gliese 581d, was the first planet to be found within the habitable zone of an extrasolar planetary system, the orbital region around a star in which an Earth-like planet could possess liquid water on its surface and possibly support life.
Where is Gliese 581?
RA 15h 19m 27s | Dec -7° 43′ 20″Gliese 581 / Coordinates
What is the characteristics of 581?
In astronomical terms, the Gliese 581 system is relatively close to Earth, at 20.37 light-years (193 trillion kilometres; 120 trillion miles) in the direction of the constellation of Libra….Gliese 581c.
| Discovery | |
|---|---|
| Time of periastron | 2454759.2 ± 0.1 |
| Semi-amplitude | 3.3 ± 0.2 |
| Star | Gliese 581 |
Where is Gliese 581 located?
How far is Gliese 581 from Earth?
20.22 light yearsGliese 581 / Distance to Earth
How big is Gliese 581?
129,250 miGliese 581 / Radius
What is special about the recently discovered extrasolar planet Gliese 581?
Given their distance to their parent star, these new planets (now known as Gliese 581c and Gliese 581d) were the first ever possible candidates for habitable planets.
How bright is Gliese 581?
10.56Gliese 581 / Magnitude
How does NASA intend to determine the components of Gliese 581?
The new findings are based on 11 years of observations of the nearby red dwarf star Gliese 581using the HIRES spectrometer on the Keck I Telescope. The spectrometer allows precise measurements of a star’s radial velocity (its motion along the line of sight from Earth), which can reveal the presence of planets.