What determines the color of a star other than temperature?

Omega Centauri
Colorful Stars Galore Inside Globular Star Cluster Omega Centauri. Credit: NASA, ESA, and the Hubble SM4 ERO Team

The stars are one of the wonderful objects in the sky which can be seen with naked eyes. When you look at the sky some stars appears brighter than others which may be either due to closeness of one star as compared to other or due to its bigger size. You also have observed that mostly stars appear white but some stars appear reddish and even bluish. Continue reading “What determines the color of a star other than temperature?”

Potentially Hazardous Asteroid to Fly by Earth Safely on January 26

Near Earth Asteroid Eros
This image, taken by NASA’s Near Earth Asteroid Rendezvous
mission in 2000, shows a close-up view of the asteroid Eros.

Asteroids are one of the most hazardous objects in the solar system. The NASA keeps close eye on potentially hazardous objects and allows us to know about asteroids coming towards Earth. This time, asteroid named as 2004 BL86, will be safely pass Earth on 26 January, 2015. The size of the asteroid is estimated to be around 650 m by studying reflected brightness of the asteroid. The asteroid of this size is categorized as Potentially Hazardous Asteroid. Continue reading “Potentially Hazardous Asteroid to Fly by Earth Safely on January 26”

Two New Planets in our Solar System are predicted by Astronomers

New planets in our solar system
At least two unknown planets could exist in our solar system beyond Pluto. Credit: NASA/JPL-Caltech.

The New Planets in our solar system are the objects which attract people more than anything in the universe. The science community is always excited to know about new planet beyond Pluto. Two research papers published this week show the evidences of two new planets beyond the orbit of Pluto. These planets are expected to be much heavier than the Earth and orbiting the sun from such a large distance that their observation with Continue reading “Two New Planets in our Solar System are predicted by Astronomers”

Eta Carinae Nebula and star system explained by impressive 3D model of NASA

Eta Carinae Nebula
Eta Carinae’s great eruption in the 1840s created the billowing Homunculus Nebula.
Image Credit: NASA, ESA, and the Hubble SM4 ERO Team

Eta Carinae is one the most massive and luminous star system in the vicinity of 10000 light years around the solar system. The Eta Carinae star is known for its violet behaviours in the past. In the mid 19th century, it had become so violet and bright that it had become the second brightest star in the sky. During that time it ejected huge amount of mass that can be used to create 10 new Suns. The reason of that tremendous outburst is still not clear. The nebula created Continue reading “Eta Carinae Nebula and star system explained by impressive 3D model of NASA”

Comet Lovejoy: First Naked Eye Comet of the Year 2015

Comet Lovejoy
Comet Lovejoy is the first naked eye comet
of the year 2015. Image credit: NASA/MSFC/MEO/Aaron Kingery

Comets are one of the most fascinating objects in the universe. The view of the bright comet with long tail is one of the rare events which do not happen frequently. It is very rare when you get the chance of watching the comet with naked eye. This New Year has given us a gift in the form of comet which can be seen with naked eye in the first few weeks of January. This comet is known as Comet Lovejoy or more formally C/2014 Q2. This is one of the Continue reading “Comet Lovejoy: First Naked Eye Comet of the Year 2015”

What are Comets?

Comet Neat
Icy Comet Neat. Credit: National Science Foundation

Comets are the most wonderful and dreadful members of the solar system. In the ancient times Comets were considered as warning of God and cause of death of monarch, disasters, plague and famine etc. Comet frightened the people for many centuries but actually Comets are very harmless and powerless. Continue reading “What are Comets?”