Showing posts with the label Earth

Titan, An Extraterrestrial World That Resembles The Physical Features Of The Earth

Saturn's largest moon 'Titan', looks very familiar to Earth from space. The moon has rivers, lakes and seas filled by rain falling through a thick atmosphere. Though these landscapes look similar, they are composed of different materials. Liquid methane streams streak Titan's icy surface, and nitrogen winds build hydrocarbon sand dunes. Image Credits: Pixabay The mechanical properties of these materials are different from those of silicate-based substances that make up other sedimentary bodies in the solar system. These materials make Titan's landscape formation mysterious. Researchers at Stanford University have shown how Titan's different plains, labyrinth terrains and dunes could be formed by identifying a process of the formation of sand grains and bedrock depending on how the stream flows and the wind blows. Titan is the only other body in the solar system that has a seasonal liquid transport cycle (precipitation) like Earth. It is also a target for space

How many trees does the Earth have?

We have always been told about the importance of forestation, the need for trees and how deforestation is causing climate change. Many of us are willing to and also actively participating to revert climate change. Keep your world clean and green.  Save trees,Save the environment!!  Cl ean city,Green city!!  To have a good scenery, there should be little greenery!  are everywhere and we are all eager to see a greener Earth. But like any other goal that we chase, shouldn't we know where we are starting and what are we aiming at? How many trees does the Earth have and is there a tree census done every decade. Recently, New York City took up the initiative to map and catalogue every tree on every street of the city. Called, TreesCount!2015 , it is a crowd sourced program, looking for the task to be completed through voluntreers . If you would like to be one, you can sign up here . But other than a few instances where cities or organizations such as Terracon or

How Sahara Desert helps the Amazon Rainforest stay green [Video]

English: Sahara desert from space. (Photo credit: Wikipedia ) The Sahara Desert is known for its dry and arid regions and the sand dunes that can rise up to almost 600 feet! While this largest hot desert (yes, we have cold deserts too... guess where) can easily be made out from satellites in space, there is more that the satellites have been able to visualise than the dryness of the land. Watch this short video from NASA below and know how the dryness of Sahara actually helps the Amazon Rainforest stay green. Balance!

The Tiniest of Fossils and what they tell us! [Video]

Tests of foraminifera extracted sand from the beach of Ngapali (Myanmar) (Photo credit: Wikipedia ) You must have heard of the largest fossil of dinosaur, Argentinosaurus found last year and we know that was probably the largest creature to have walked our Earth .  But what do the tiniest fossils tell us.  This video from AMNH tells us more about the tiny creatures from the sea floor! 

7 Billion: How Did We Get So Big So Fast?

We always speak of population booming around the globe and the consequences that we will face in the near future due to our explosive rate of growth that our species has seen. Here's a short explanation of how did we get so big so fast! For those who would like to use this information with a little bit of historical context, here is a great video from American Museum of Natural History's YouTube channel that gives you a little insight into evolution, the famous Empires of the world, the stages of human progress and a few tips to prepare for a better future. If you like these video, do share them with your friends, family and colleagues.

Survival of the smallest!

In a billion years from now, the Earth will be inhabited just by microbes. Not animals, not cockroaches but microbes. This conclusion is a result of a computer model used by researchers to predict the status of life on Earth after a few billion years. As years pass by, the augmenting luminosity of the Sun will create an unfavourable rather intolerable environment for humans, plants and animals alike on our planet. The increased temperatures of up to 100 degrees Celsius  will lead to the evaporation of oceans which in turn will lead to increased salinity of large water bodies, high atmospheric pressure and a drastic reduction in oxygen and carbon dioxide content. The poisonous, high pressure, high salinity and zero-oxygen condition will only be withstood by organisms that already survive under such extreme conditions and are called “extremophiles”. Desert ants sprinting on scorching sand, spiders in snowy areas and beetles with antifreeze blood are some of the creatures identif

Is the Earth's gravity same everywhere?

Earth's gravity measured by NASA's GRACE mission, showing deviations from the theoretical gravity of an idealized smooth Earth. (Photo credit: Wikipedia ) When you drop something, it falls downwards towards the ground. Why does it fall down? Why not up? All such questions were answered with a 7 lettered word-GRAVITY. Gravity is an attractive force and is stronger on Earth as compared to our Moon due to larger mass. When you drop an object it falls towards the ground and when it is dropped from a greater height it falls towards the ground with greater speed and impact. The greater impact and speed is attributed to acceleration (the rate of change of speed) which is higher due to gravity. The force of gravity is inversely proportional to the radius of the Earth , that's what our textbooks said in school. But a recent press release from the European Space Agency , showed that the shape of the Earth is not a perfect sphere but a geoid or ellipsoid, bulging slightly

Earth from the ISS

The International Space Station (ISS) is one of the most collaborative of human projects ever undertaken. It involves spaces agencies of five nations and serves astronauts from 15 different countries. Here is just a glimpse of our own planet from the ISS.  We know you will like it, but don't forget to share it with others!

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