An invisible gas cloud of spectacular proportions, moving at some 700,000 mph, is believed to be heading for a collision with our galaxy, releasing enough energy to form over two million new stars.


​But nobody alive on Earth today should worry, as it is expected to occur some 30 million years in the future, according to research published in the Astrophysical Journal Letters.

The cloud was discovered in 1963 by American astronomer Gail P. Smith, and later named after him. Since then, the "Smith Cloud" has been thoroughly examined by various astronomers using the Green Bank Observatory and the Hubble Telescope.

According to estimates, the cloud formed on the outskirts of the Milky Way during the period when dinosaurs walked the Earth, approximately 70 million years ago. The Smith Cloud trajectory has been poetically described by astronomers as: "what goes up must come down." After forming, cosmologists note that the cloud was blown away from the Milky Way and then, reaching its farthest point, turned back.

"It's [the path of the cloud] telling us that the Milky Way is a bubbling, very active place where gas can be thrown out of one part of the disk and then return back down into another," Andrew Fox, of the Space Telescope Science Institute in Baltimore, Maryland, leader of the research team said, outlining that movement of gas reflects changes constantly occurring within our galaxy.

• Music in our DNA
• Harmony in health, variations cause deterioration
• Nerves transmit musical impulses, not electrical ones
• Intelligence correlates with harmony

"Music is the universal language of mankind." Henry Wadsworth Longfellow

An ancient understanding of the cosmological universe puts forth that inaudible music calculates the position of the heavenly bodies in our skies. With quintessential harmony, Mars, Neptune, Uranus, and all the other planets are held perfectly in place, with the harmonic ratios of each planet determining how they respond to one another, and how they affect all life on the planet earth, as well as sentient life elsewhere in the galaxy. The ancients understood that cosmic harmony is the state of enlightenment. Disharmony, is when the egoic nature, or false self has not been healed, and conducts the 'show' of our lives - the musical, as it were, of you.

As births go, they don't come much more violent than the Moon's.

Some 4.5 billion years ago, the young Earth collided with a developing planet, Theia. But instead of dealing each other a glancing blow, chemical analysis shows the collision was head-on, disintegrating Theia and part of Earth into a hot swirling disk of water and dust surrounding what was left of Earth.

This mix eventually clumped together to become the Moon, a new study suggests.

The key to the findings is the unique oxygen "fingerprint" that is found in all the planets, moons, comets and asteroids in our Solar System, including the Earth and the Moon.

More than 99.9% of Earth's oxygen is "normal", with each atom containing eight protons and eight neutrons. But there are small quantities of slightly heavier oxygen - molecules with an extra neutron jammed in.

While this "fingerprint" is a reliable identifier, it has traditionally been very hard to detect. So the University of California Los Angeles-led team used new, super-sensitive equipment to analyse seven lunar rocks brought back by the Apollo 12, 15 and 17 missions, as well as a lunar meteorite, and compared them to six volcanic rocks from the Earth's mantle. They found their heavy oxygen levels to be almost identical - within five parts per million.

To have that level of similarity, the planetary objects must have crashed into each other straight on. A side blow couldn't account for that degree of mixing.

NASA is engaged in a study of four types of herpesviruses to better understand how they mutate - and worsen - before, during, and after manned space missions. Funded by grants and contracts totaling $80,000, it is expected to be completed by May of 2018.

Titled "Effect of Spaceflight on Herpesvirus Genome Stability and Diversity," the research is being conducted out of the University of Florida.

"The goal of this study will be to determine the changes in the genomic and mutational diversity that is present in the Herpesvirus virome present in astronaut saliva and urine samples collected before, during, and after space flight," NASA said on its website.

Is my yellow the same as your yellow? Does your pain feel like my pain? The question of whether the human consciousness is subjective or objective is largely philosophical. But the line between consciousness and unconsciousness is a bit easier to measure. In a new study of how anesthetic drugs affect the brain, researchers suggest that our experience of reality is the product of a delicate balance of connectivity between neurons—too much or too little and consciousness slips away.

"It's a very nice study," says neuroscientist Melanie Boly at the University of Wisconsin, Madison, who was not involved in the work. "The conclusions that they draw are justified."

Previous studies of the brain have revealed the importance of "cortical integration" in maintaining consciousness, meaning that the brain must process and combine multiple inputs from different senses at once. Our experience of an orange, for example, is made up of sight, smell, taste, touch, and the recollection of our previous experiences with the fruit. The brain merges all of these inputs—photons, aromatic molecules, etc.—into our subjective experience of the object in that moment.

Michael Denton has written a sequel to his groundbreaking book, published in 1985, Evolution: A Theory in Crisis. As readers of Evolution News know, the new book is Evolution: Still A Theory in Crisis. The thing to note, first of all, is that the new title is correct.

Even after thirty years. The problems Denton outlined more than thirty years ago are still there. The main argument of Denton's book, that nature is discontinuous and not the product of gradual incremental change, is as true today as it was then, despite the predictions of scientists that new discoveries in developmental biology would come to the rescue.

Denton's thesis has history behind it. It comes from a long line of structuralist biologists. In fact, before Darwin, nearly every mainstream biologist held a structuralist point of view -- as opposed to an adaptationalist one -- and for many years after Darwin the idea of structuralism persisted as an acceptable view.

Scientists might have found the biological cause of schizophrenia, in a study that has been described as a "turning point" in tackling mental illness.

A new study appears to show that the devastating disorder is linked to a physical process where connections between parts of the brain are "pruned" away.

The finding could lead scientists to be able to work out a way of treating the disease at its source, rather than simply looking to reduce the symptoms. It might even be discovered that schizophrenia could be triggered by an infectious agent.

When people are going through adolescence, their brains are re-wired in a way that sees some synapses cut away. But a gene leads some people's brains to prune away too much, and leads to presentations of schizophrenia, according to the study.

The extreme "pruning" can bring about the symptoms of schizophrenia, which can be hugely debilitating and lead people to lose their grip on reality and see delusions and experience paranoia.

A fifth force may exist that disrupts the predictions general relativity makes outside our own galaxy, on cosmic-length scales. University of Pennsylvania astrophysicist, Bhuvnesh Jain, says the nature of gravity is the question of a lifetime. As scientists have been able to see farther and deeper into the universe, the laws of gravity have been revealed to be under the influence of an unexplained force.

Two branches of theories have sprung up, each trying to fill its gaps in a different way. One branch — dark energy — suggests that the vacuum of space has an energy associated with it and that energy causes the observed acceleration. The other falls under the umbrella of "scalar-tensor" gravity theories, which effectively posits a fifth force (beyond gravity, electromagnetism and the strong and weak nuclear forces) that alters gravity on cosmologically large scales.

"These two possibilities are both radical in their own way," Jain said. "One is saying that general relativity is correct, but we have this strange new form of energy. The other is saying we don't have a new form of energy, but gravity is not described by general relativity everywhere."

Jain's research is focused on the latter possibility; he is attempting to characterize the properties of this fifth force that disrupts the predictions general relativity makes outside our own galaxy, on cosmic length scales.

By analyzing a well-studied class of stars in nearby galaxies, Jain and his colleagues have produced new findings that narrow down the possibilities of what this force could be. Their findings are a vindication of Einstein's theory of gravity.

Having survived a century of tests in the solar system, it has passed this new test in galaxies beyond our own as well.In 1998, astrophysicists made an observation that turned gravity on its ear: the universe's rate of expansion is speeding up. If gravity acts the same everywhere, stars and galaxies propelled outward by the Big Bang should continuously slow down, like objects thrown from an explosion do here on Earth.

This observation used distant supernovae to show that the expansion of the universe was speeding up rather than slowing down. This indicated that something was missing from physicists' understanding of how the universe responds to gravity, which is described by Einstein's theory of general relativity.

Jain's breakthrough came about when he and his colleagues realized they could use the troves of data on a special property of a common type of star as an exquisite test of gravity.

Astrophysicists have been pursuing tests of gravity in the cosmos for many years, but conventional tests require data on millions of galaxies. Future observations are expected to provide such enormous datasets in the coming data. But Jain and his colleagues were able to bypass the conventional approach.

One of the most widely used commercial chemicals to kill bedbugs are not effective because the pesky insects have built up a tolerance to them, according to a team of researchers from Virginia Tech and New Mexico State University.

Millions of dollars have been spent on insecticides to kill the bugs that have wreaked havoc on everything from hotels in New York City to homes in Los Angeles. But this is the first study to show that overuse of certain insecticides has led to an increased resistance to the compounds, making them much less effective than advertised.

"While we all want a powerful tool to fight bed bug infestations, what we are using as a chemical intervention is not working as effectively it was designed and, in turn, people are spending a lot of money on products that aren't working," said Troy Anderson, an assistant professor of entomology in the Virginia Tech College of Agriculture and Life Sciences.

Volcanic eruptions at the bottom of the sea are at the heart of how the Earth works, yet we know surprisingly little about them.

But now, thanks to a network of seafloor sensors connected to the internet, scientists are starting to get a glimpse of the fundamental processes that shape our planet.

This "ocean observatory" is situated atop an underwater mountain range off the coast from Oregon and Washington, and can measure everything from the rumbles of deep-sea earthquakes to the chemical burps of volcanic vents. And it just went online this month, The New York Times reported.

About 70% of the volcanism on Earth occurs underwater, yet it's traditionally been hard to study, said Deborah Kelley, the University of Washington scientist who directs the US part of the observatory (Canada directs the other part).

Now, for the first time, "we can see how a volcano lives and breathes and impacts our planet," Kelley told Business Insider, adding "It's basically the internet on the seafloor."