Dust, not "alien megastructures", cause of unusual dimming of star
Posted: Sun, Jan 7, 2018, 9:22 AM ET (1422 GMT)
Astronomers announced this week that they believe the unusual changes in brightness in a distant star can be explained by a natural, and not artificial, cause. Observations of the star KIC 8462852 by NASA's Kepler spacecraft captured the attention of astronomers because of an unusual dimming pattern that some suggested could be explained if giant structures, created by some alien civilization, were orbiting the star. New observations of the star, though, show that the star dims by different amounts at different wavelengths, and thus whatever is causing the dimming is not opaque. Instead of alien megastructures, astronomers suggest dust clouds around the star may be causing the brightness changes.
Astronomers announced this week that they believe the unusual changes in brightness in a distant star can be explained by a natural, and not artificial, cause. Observations of the star KIC 8462852 by NASA's Kepler spacecraft captured the attention of astronomers because of an unusual dimming pattern that some suggested could be explained if giant structures, created by some alien civilization, were orbiting the star. New observations of the star, though, show that the star dims by different amounts at different wavelengths, and thus whatever is causing the dimming is not opaque. Instead of alien megastructures, astronomers suggest dust clouds around the star may be causing the brightness changes.
Related Links:
| <<previous article | next article>> |
|
news in brief
|
|
|
|
news links
|
|
Friday, March 14
Tiny Mars moon Deimos gets a rare close-up, thanks to Europe's Hera asteroid probe
SPACE.com — 3:41 am ET (0741 GMT) ESA's Hera probe trains its cameras at Mars' moon Deimos
SPACE.com — 3:41 am ET (0741 GMT) Watch moon dust fly as private Blue Ghost lunar lander touches down
SPACE.com — 3:40 am ET (0740 GMT) Former Google chief Eric Schmidt takes the reins at rocket startup Relativity Space
SPACE.com — 3:40 am ET (0740 GMT) First Thermal Images of Mercury from BepiColombo
Sky & Telescope — 3:38 am ET (0738 GMT) |
