Navaneeth Unnikrishnan at Kasargod, Kerala, India captured this wonderful shot of Saturn, the star Antares and the Rho Ophiuchus cloud complex on February 28, 2015. Some photo details:
A total exposure of 24 minutes, 3 mins x 7 images stack.
Canon 6D + 50mm. Stacked in DSS. Processed in Photoshop CC
In Navaneeth’s photo, you’re seeing examples of both star birth and star death.
The star Antares – brightest star in the constellation Scorpius – is the yellowish star in this photo. Antares is a giant star, near the end of its life, located some 600 light-years away. If Antares replaced our sun in the solar system, its outer surface would extend beyond the orbit of Mars. This aging star will eventually explode as a supernova. At present, tiny smoke-like particles, made from traces of heavier elements formed inside the star, are drifting away from Antares’ surface, reflecting this star’s yellowish light. That’s why a wispy nebula seems to surround Antares. Read more about Antares.
Meanwhile, in the vast space between the constellations Scorpius and neighboring Ophiuchus, there is a huge dusty region containing many spectacular interstellar nebulae – places where new stars are born. The dark streaks in this photo are part of the Rho Ophiuchi cloud complex, a huge, cool cloud of dust and gas. The region appears dark because the dust hides the light of background stars. Read more about Antares and the Rho Ophiuchi dark cloud.
Bottom line: The bright star Antares, planet Saturn, various kinds of nebulae in space, and a word about the birth and death of stars. Photo by Navaneeth Unnikrishnan from Kasargod, Kerala, India.
Deborah Byrd created the EarthSky radio series in 1991 and EarthSky.org in 1994. Today, she serves as Editor-in-Chief of this website. She has won a galaxy of awards from the broadcasting and science communities, including having an asteroid named 3505 Byrd in her honor. A science communicator and educator since 1976, Byrd believes in science as a force for good in the world and a vital tool for the 21st century. "Being an EarthSky editor is like hosting a big global party for cool nature-lovers," she says.