Despite today people are living longer, healthier, and happier lives than ever before, there are still many problems that humanity should address. One of the most important of them is the water inequality. While people in First World countries can very easily take fresh, clean water for granted, more than 800 million others in impoverished areas have no access to any clean water source. It is a common occurrence in some regions for people to defecate openly, walk more than 30 minutes to access clean water and share toilets with other humans. In 2018, is this really something that we should just accept as an inevitable way of the world?
Continue reading World’s Water Inequality Crisis
Yesterday, I stumbled upon a YouTube channel named The Science Asylum. In this channel, physicist Nick Lucid covers some popular science subjects. For example, the video below, titled “How Far Away Is The Moon?” explains the distance between the Earth and the moon, and how our brains aren’t good at dealing with the big numbers.
Continue reading How Far Away Is The Moon?
Alan Bean, the fourth person to walk on the Moon has died today (May 26, 2018). He was the fourth person to walk on the Moon: in November 1969, he spent 10+ hours on the lunar surface during Apollo 12 mission, the sixth manned flight in the United States Apollo program and the second to land on the Moon.
Continue reading Alan Bean, the fourth person to walk on the Moon has died
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”), at around 64,000 kilometers per hour (40,000 mph). The impact has created a crater (Chicxulub crater) more than 180 km (110 miles) in diameter. But, what’s more, the energy of the impact (which is equivalent of about ten billion Hiroshima atom bombs) vaporized the rock which was rich in sulfur compounds, filling the air with a thick cloud of dust, similar to that created by a catastrophic volcanic eruption. This cloud blocked out the sun at least for a decade and caused a global, dark winter: even in the tropics the temperatures were barely above freezing, and the average global temperature was below 0°C (32°F). Before the impact, the average global temperature was around 26°C (47°F), so this means a huge drop. And the recovery time was more than 30 years! The dinosaurs which had dominated the Earth for more than 150 million years were used to living in a lush climate and were already in decline, so non-avian dinosaurs couldn’t survive after the last deadly blow.
Continue reading Dinosaur-killer Asteroid Triggered a Global Warming which lasted 100,000 Years
Hint: they are all space rocks. But, there are some differences. The biggest difference between an asteroid and a comet, for example, is what they are made of.
Continue reading What’s the Difference Between a Meteoroid, a Meteor, a Meteorite, an Asteroid, and a Comet?
A crescent-Earth photo, by an automatic camera aboard the unpiloted Apollo 4 command module on November 9, 1967, at an altitude of 11,200 miles (18,000 km). Apollo 4, (also known as AS-501), was the first unmanned test flight of NASA’s mighty Saturn V rocket, which was used by the U.S. Apollo program to send the first astronauts to the Moon.
Continue reading Earth as seen by Apollo 4
On November 12, 1966, during the Gemini 12 mission EVA 1 (Extravehicular activity), NASA astronaut Edwin “Buzz” Aldrin took his own self-portrait with his camera with our beautiful Earth is in the background. This historic photo is widely regarded as the “first space selfie”.
Continue reading Buzz Aldrin’s “Selfie” during Gemini XII Mission
The European Space Agency (ESA) occasionally posts high-resolution photos of space under the title of “week in images”. This amazing image of the Mont Saint-Michel from space, which was captured on 21 June 2017, is also featured on the ESA’s Earth from Space video programme, presented by Kelsea Brennan-Wessels from the ESA Web TV virtual studios.
Continue reading Mont Saint-Michel, France, From Space
Where is the coldest known place in the Universe? It may sound strange, but today, it is here on Earth: in 1995, in a laboratory in M.I.T. (Massachusetts Institute of Technology), the German physicist Wolfgang Ketterle and his colleagues have cooled a sodium gas to the lowest temperature ever recorded, only half-a-billionth of a degree above absolute zero.
Continue reading Soon, the ISS Will Be the Coldest Known Place in the Universe
If we limit global warming to 1.5°C rather than 2°C above the pre-industrial levels by the year 2100, the impacts of climate change would be much less dramatic, a new study says. According to the researchers, for vertebrates and plants, the number of species losing more than half their geographic range by 2100 will be halved when warming is limited to 1.5°C, compared with projected losses at 2°C. It would be even better for insects, the most diverse group of animals on Earth: the number is reduced by two-thirds.
Continue reading Most species hold their geographic range if we limit global warming to 1.5°C, study says