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Thursday, August 28, 2025
TopicAstronomy

Topic: astronomy

Subrahmanyan Chandrasekhar’s stellar limit was called absurd. It got him 1983 Physics Nobel

No direct observations of any star exceed the Chandrasekhar limit. The theoretical physicist's calculations have helped so far to understand supernovas, neutron stars, and black holes.

Jayant Narlikar on a universe with no beginning, why sky is blue & the classic astronomy-astrology mix-up

In a 2015 'Walk the Talk' with Editor-in-Chief Shekhar Gupta, the legendary astrophysicist who died Tuesday explained his thoughts on Big Bang & how curiosity keeps a scientist young.

Amity school students witness rare planetary parade in Delhi—Saturn’s rings to Jupiter’s moons

Twenty students caught the celestial phenomenon despite fog and an AQI of 365.

Delhi is missing out on planetary parade due to pollution. Rest of India enjoys watch parties

When the planetary parade was at its best view in Kolkata, Bengaluru and Dehradun, the national capital recorded an AQI of 289. Light rain also impacted visibility in some parts of the city.

From heralding births of kings to spacecraft navigation, planetary parade’s over 2,000 yrs old history

By mid-February, Venus, Mars, Jupiter & Saturn, already visible to the naked eye, will be joined by Mercury, Neptune & Uranus in a rare 'planetary parade', officially called a syzygy.

Pune astronomers identify galaxy in Milky Way’s neighbourhood as ‘explosive factory’ of gamma rays

Kathryn’s Wheel was formed due to collision of 2 galaxies, but study published in The Astrophysical Journal Letters notes that star formation alone doesn't explain gamma ray emission.

India’s X-ray satellite system Daksha can settle the dark matter question

Daksha would be an invaluable tool to study flares from the Sun, X-rays from certain pulsating neutron stars, gamma-ray lightnings in the Earth's atmosphere, and so on.

North America prepares for total solar eclipse Monday. Wait for 2 years if you miss it

US will have clearest view, with Canada & Mexico also being able to sight phenomenon. Partial eclipse will be visible over northern parts of South America, Caribbean islands.

Indian students shine at international astronomy olympiad, win gold, silver and bronze

Aarush Mishra, Siddharth Kumar Gopal and Satwik Patnaik secured gold, silver and bronze medals, respectively, at the 2nd IOAA-Jr, an international competition of astronomy & astrophysics.

How astronomers use ‘dead stars’ to measure gravitational waves of ancient black holes

Gravitational waves are ripples in spacetime caused by massive accelerating objects.

On Camera

Severe Hyderabad internet outages make it an IT hub without the IT part

Many offices in Telangana have asked their employees to work from home because of heavy rainfall, but it has become impossible due to the internet outages.

‘Not just Russian oil, India tapped us along on trade deal,’ says US treasury secy Scott Bessent

New Delhi: The US is not worried about the rupee “becoming a reserve currency” given that it is at an all-time low versus the...

CDS on differences on theaterisation—views welcome, final call to be in nation’s best interests

The Navy has always been on board with the theaterisation plan, but the Air Force feels splitting up air assets into several theatre commands is futile & will tie up critical systems.

That Oval Office picture for ages deserves closer Indian reading, with a geopolitical lens

Putin sees this as a victory. Europeans have decided to deal with Trump on his terms for the sake of the larger Western alliance. We look at the lessons for us in India.