gravity

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The New Coronavirus Has Reminded Us of Our Debt to Darwin

Pervez Hoodbhoy 11/04/2020

Without Darwinian selection, one can't even begin to understand...

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Earth Currently Has A Second Moon – But It Won’t Stay Long

David Rothery 01/03/2020

The object 2020 CD₃ is essentially just a tiny...

Big Bang, Big Chill, Big Freeze, Big Rip, quantum tunneling, cosmic microwave background radiation, metric expansion of the universe, cosmic inflation, redshift, Doppler effect, metastable valley, Hubble constant, cosmological constant, Quintessence, dark energy, gravity, general theory of relativity,

Why Won’t the Gravity of Galaxies Keep Our Universe From Expanding?

Ronak Gupta 18/11/2019

About five billion years ago, the universe switched gears...

An artist’s impression of the path of star S2 as it passes very close to the supermassive black hole at the centre of the Milky Way. The very strong gravitational field causes the colour of the star to shift slightly to the red. (Size and colour exaggerated for clarity)

Einstein’s Theory of Gravity Tested by a Star Speeding Past a Supermassive Black Hole

Tanya Hill and Geraint Lewis 31/07/2018

For most places in the universe, where gravitational fields...

According to the theory of panspermia, outer space seeded Earth with comet-borne primitive life forms over four billion years ago. Credit: Yuri_B/pixabay

Eight Important Ethical Questions About Exploring Outer Space

Benjamin Sachs 29/06/2018

Nearly 50 years since the first man walked on...

Credit: skeeze/pixabay

Why Science Says Astrology Lacks Meaning and Evidence

S.K. Arun Murthi 30/10/2017

If astrology is about how planetary positions influence humans,...

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Sundar Sarukkai’s Claim That the ‘March for Science’ Was Unscientific Is Farcical

Rahul Siddharthan 11/08/2017

In a flawed critique against the March for Science...