A halo of dark matter surrounding our Galaxy
Researchers studied the motions of stars in the outer regions of the Milky Way Galaxy and found that the gravitational field of a long,…
Category: What do we know about stars?
What do we know about stars? How can stars teach us about ourselves, the Earth?
Has Earth received any radio signals from aliens?
Scientists affiliated with the SETI@home project analyzed 14 years of radio wave data collected by the Arecibo Telescope and identified 92…
Are aliens receiving radio signals from Earth?
Scientists calculated the maximum distance at which extraterrestrials with modern human-level technology could detect radio signals from…
These gases could signify intelligent life beyond Earth
Astronomers proposed that the industrial gases nitrogen trifluoride and sulfur hexafluoride could provide measurable signs of advanced…
The fate of massive rotating stars
Researchers showed that massive stars at the end of their lives are more likely to collapse into black holes than to explode into…
Scientists observe a changing exoplanet orbit
Astronomers conducted a multifaceted study of the exoplanet TrES-1 b and found that its orbit is shifting, possibly due to an unseen…
How did early galaxies form?
Astronomers observed a distant, ancient galaxy and found that it consisted of 5 distinct regions, suggesting a complex formation history…
How often are stars flung out of the center of the Galaxy?
Researchers surveyed stars in the Milky Way Galaxy and found they’re only rarely ejected from the Galaxy's center.
Stellar flares could masquerade as life on exoplanets
Astronomers tested whether energy bursts from stars could artificially elevate typical “biosignature” gases on exoplanets.
The lifecycle of a steam world
Scientists studied exoplanets with high water contents and found that they initially have outer vapor layers, which then cool and shrink…