from the world's big
WATCH: Dinosaurs traveled other parts of Milky Way than humans
Dinosaurs never left Earth, but they still traveled millions of miles through the Milky Way galaxy.
- A new video shows how life has evolved on Earth during the planet's most recent revolution around the Milky Way, also known as one galactic year.
- A galactic year is about 220 million years, and it was the beginning of the Jurassic period the last time Earth was at this point in its revolution.
- How will Earth look on its next galactic birthday? It's impossible to know for sure, but a few events seem inevitable.
It's been 200 million years since the dawn of the Jurassic period, the second of the three epochs in the Mesozoic era, during which dinosaurs roamed the Earth. But in terms of how many galactic years have passed since then, the count is just one.
Just as the Earth orbits the Sun, our solar system revolves around a supermassive black hole at the center of the Milky Way galaxy. To complete one revolution takes about 220 million years. So, if you were to look back to when Earth was at this exact point in its previous revolution, you wouldn't see humans. Or any primates. Instead, you might see reptilian pterosaurs flying in the skies, plesiosaurs swimming in the oceans, and massive, razor-clawed theropods walking the land, among other ancient animals that no longer exist today.
To give perspective to the sheer magnitude of Earth's galactic year, NASA research scientist Dr. Jessie Christiansen made a video mapping the evolution of life to Earth's most recent revolution around the Milky Way.
I have always been interested in galactic archaeology, but I don't think this is what they meant. Did you know tha… https://t.co/PQHh2OVErt— Dr. Jessie Christiansen (@Dr. Jessie Christiansen)1567015537.0
Interestingly, the Jurassic period only took place on one side of the Milky Way, and when Earth was last on the opposite side of the galaxy, it was the mid-Cretaceous period. If you imagine progress of a galactic year as one hour on a clock, the time during which humans have existed on Earth would represent much less than one minute. And that's just for the most recent galactic year.
To get a sense of the physical scale at which this process occurs, check out this video from the American Museum of Natural History.
The Milky Way in future galactic years
Christiansen ends her video by asking what Earth will be like on its next Galactic birthday. It's difficult for scientists to know for sure, but a couple likely changes include: each day will be an hour longer, due to a slowing of the Earth's rotation, and the continents will have merged, making our modern map of the world virtually unrecognizable.
On the cosmic scale, making predictions becomes even more difficult. But based on the available data, a few events seem inevitable:
- 12 galactic years: No life exists on Earth, and from a distance the planet will likely show no signs that it ever supported life.
- 15 galactic years: The conditions on Earth are similar to those on Venus.
- 22 galactic years: The Milky Way and Andromeda Galaxy begin to collide.
- 500 galactic years: The universe has expanded so much that all galaxies beyond the Local Group have disappeared beyond the cosmic light horizon.
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Your favorite color can be linked to various personality traits, motivation, and productivity levels in your life.
- Color psychology has been used in marketing and branding for years, but research in the last decade has taken color psychology and applied it to human personality traits.
- Colors aren't merely associated with various feelings but can actually shape our perceptions and personalities.
- Various studies across multiple years have given us insight into what each color represents in regards to our personality, work ethic, and motivation levels.
What is color psychology?<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMjkzNDU4MC9vcmlnaW4ucG5nIiwiZXhwaXJlc19hdCI6MTY0Mzc2Mzk4NX0.KqHFgzhzl-dKmUvgDZsYGEDgDPVU40mA2mV1GLb1a68/img.png?width=1500&coordinates=0%2C0%2C0%2C0&height=1314" id="109d8" class="rm-shortcode" data-rm-shortcode-id="42ec0b499017c39ed1e3df32308370c2" data-rm-shortcode-name="rebelmouse-image" alt="The Logo Company color marketing infographic" />
Colors have been used strategically in branding for years.
Image by The Logo Company<p>Many people are unaware of the impact colors have on our thoughts, emotions, and behaviors in everyday life.</p><p>It's extremely likely that you have purchased something in a store or chosen one product over another due to what brands call color marketing: targeting brands, colors, and adverts based on colors that will influence you to buy. </p><p>You can see in the infographic above that companies that want to be associated with dependability (Dell, HP, IBM) use the color blue. Companies that want to be known for being exciting and fun (Fanta, Amazon, Nickelodeon) use a splash or orange. </p><p>Color psychology is being used around us every single day and not only in what brands we buy, but also in how we react to our environment. Extending color psychology into the realm of personalities is about proving that colors aren't just about what looks the best, but about what meaning we subconsciously attach to those colors, and how to use that to benefit our lives.</p>
What your favorite color says about your personality<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMjkzNTc2Ny9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTY0NTc2MTU1NH0.iLH4yQoMFZMDW1YJo1YRMR8jOZDfDd3PFdu_IynkBcM/img.jpg?width=980" id="6e5e9" class="rm-shortcode" data-rm-shortcode-id="5b38c0f7793933f9ab35a61a2f7bb14a" data-rm-shortcode-name="rebelmouse-image" alt="child holding crayons" />
A new study looks at what would happen to human language on a long journey to other star systems.
- A new study proposes that language could change dramatically on long space voyages.
- Spacefaring people might lose the ability to understand the people of Earth.
- This scenario is of particular concern for potential "generation ships".
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