Earth can be a model for detecting vegetation on exoplanets

Back in December 1990, during its flyby of Earth, NASA’s Galileo spacecraft, which studied the planet Jupiter and its moons, as well as several other Solar System bodies, pointed its instruments towards Earth, at the urging of Carl Sagan. And, it has found evidence of life on our planet. This can be a key to detecting …

Top 15 Largest Birds in the World

Birds (Aves or avian dinosaurs) range in size and weight from the 5 cm (2 in) and 1.6-2 grams bee hummingbird to the 2.75 m (9 ft) and 104-156 kg (229-344 lbs) ostrich. Here are the top 15 largest bird species in the world (by body weight). Birds are from one of six basic animal …

Dinosaur-killer Asteroid Triggered a Global Warming [and it lasted 100,000 Years!]

Around 66 million years ago, an asteroid or comet at least 10 kilometers (6 miles) in diameter impacted a few miles from the present-day town of Chicxulub in Mexico (hence it is dubbed as the “Chicxulub impactor”, the “dinosaur-killer”), at around 64,000 kilometers per hour (40,000 mph). The impact has created a crater (Chicxulub crater) …

What a fossil revolution reveals about the history of ‘big data’

In 1981, when I was nine years old, my father took me to see Raiders of the Lost Ark. Although I had to squint my eyes during some of the scary scenes, I loved it – in particular because I was fairly sure that Harrison Ford’s character was based on my dad. My father was …

Here’s What did Ancient Earth Look Like

I stumbled upon an amazing web page showing what did ancient Earth look like. On the “Dinosaur Pictures and Facts” web page (dinosaurpictures.org), there’s also an interactive animation. On this page, you can either select the years (i.e. 600 million years ago) or jump to a particular event (i.e. first multicellular life) and see how ancient …

The oldest fossils suggest that life should be common in the Universe

Are we alone in the Universe? Or any other life forms exist out there? A new study, published on the Proceedings of the National Academy of Sciences of the United States of America (PNAS) Notes 1 suggests that life emerged so early on Earth – it should be widespread. In other words, the Universe should be …

Dinosaur-killer asteroid hit the “worst possible place” 66 million years ago, say Scientists

According to the scientists who drilled into the Chicxulub crater buried underneath the Yucatán Peninsula and the Gulf of Mexico, the dinosaur-killer asteroid hit the “worst possible place” (for the dinosaurs, of course). They summarized their findings so far in a BBC Two documentary titled “The Day The Dinosaurs Died”. The documentary was presented by …

Darkness and cold killed the dinosaurs 66 million years ago

Now we have a computer simulation of how the afterward effects of the famous Chicxulub asteroid (estimated to be 10 km/6.2 mi) wide) killed the non-avian dinosaurs (and also a wide range of other species). According to a new study, after the devastating impact, the darkness and cold killed the dinosaurs 66 million years ago. On January …