The 42,000 year old kauri tree has information about Earth’s magnetic field reversal at the time.
Tag: Science
Coelacanth – No Longer A Living Fossil
This weird fish called the coelacanth has long been known as a living fossil. After disapearing for over 60 million years it reappeared. And now genetic testing shows it has been hijacking genes from other species.
This week in science: Philae was found and OSIRIS-REx is travelling to Bennu!
(Published in The Nation Pakistan)
The landing of the orbiter and the search for it also gave scientists plenty of lessons for future missions. Now, on September 30, Rosetta will come very close to the comet, make some critical observations and then will descend on to the surface.
The Wanderer has a new friend: Juno visits Jupiter
Humans now have spacecraft orbiting Venus, Earth, the Moon, Mars, Ceres, Jupiter and Saturn.
In search of Einstein’s gravitational waves
(Published in The Nation Pakistan)
It has been a hundred years since Einstein proposed GR, stating that spacetime was curved due to the presence of massive bodies, which change this curvature as they move. This successfully explained and predicted additional physical phenomena, which would be later confirmed through experimentation. For a century this theory has passed every test.
One prediction of GR has been elusive however. That is, the direct proof for gravitational waves – ripples or fluctuations in the fabric of spacetime – caused by accelerating masses – which transport energy as gravitational radiation.