What is the fastest day?
WHAT WE FOUND. The Earth rotated faster than usual on June 29, 2022, resulting in the shortest day in modern history, according to NASA. In an Aug. 12 blog post, the space agency explained June 29 was 1.59 milliseconds shorter than a standard 24-hour day, which is roughly 86,400 seconds long.
Earth completed its normal 24-hour rotation 1.59 milliseconds fast on June 29, breaking the record for the shortest day in modern history. Sign up for CNN's Wonder Theory science newsletter.
In 2022 the winter solstice will occur on Wednesday 21 December. The winter solstice occurs in December, and in the northern hemisphere the date marks the 24-hour period with the fewest daylight hours of the year. That is why it is known as the shortest day of the year, or the longest night of the year.
Apparently, Earth has actually been speeding up for a few years now. In 2020, it set new records no less than 28 times, according to Time and Date, despite the last record being set all the way back in 2005. This trend looks set to continue in 2022, but scientists are yet to agree on why Earth's spin is speeding up.
About June 21 the sun is over the Tropic of Cancer by giving the northern hemisphere its longest day. In December the southern hemisphere enjoys its summer solstice as the sun rises above the Tropic of Capricorn.
NASA knows of no asteroid or comet currently on a collision course with Earth, so the probability of a major collision is quite small. In fact, as best as we can tell, no large object is likely to strike the Earth any time in the next several hundred years.
In Earth's early history, a day was 23.5 hours and a year lasted 372 days.
Over millions of years, Earth's rotation has been slowing down due to friction effects associated with the tides driven by the Moon. That process adds about about 2.3 milliseconds to the length of each day every century. A few billion years ago an Earth day was only about 19 hours.
Even though most people consider June 21 as the date of the June solstice, it can happen anytime between June 20 and June 22, depending on the time zone. June 22 solstices are rare—the last June 22 solstice took place in 1975, and there won't be another one until 2203.
Summer 2022 — also known as the “summer solstice” — officially began at 5:14 a.m. on June 21. This summer solstice is the longest day of the year, the day with the most hours of sunlight during the whole year. For June 21, Staten Island will enjoy just over 15 hours of daylight.
What are the 2 shortest days of the year?
The two solstices happen in June (20 or 21) and December (21 or 22). These are the days when the Sun's path in the sky is the farthest north or south from the Equator. A hemisphere's winter solstice is the shortest day of the year and its summer solstice the year's longest.
Over the past few decades, Earth's rotation around its axis—which determines how long a day is—has been speeding up. This trend has been making our days shorter; in fact, in June 2022 we set a record for the shortest day over the past half-century or so.
In the southern hemisphere, 22nd December has the longest day and the shortest night. The earth is tilted on its axis by 66.5 degrees. This way, on two specific days of the year one pole of the earth is tilted away the most from the sun. The pole near to the sun, therefore, has the longest day and the shortest night.
The world will witness the Summer Solstice 2022 on Tuesday, June 21, 2022. The summer solstice, aka the June solstice, is the longest day in the Northern Hemisphere and the shortest one in the Southern Hemisphere.
Finally, the most probable fate of the planet is absorption by the Sun in about 7.5 billion years, after the star has entered the red giant phase and expanded beyond the planet's current orbit.
As we get older, we have fewer new experiences and the world around us becomes more and more familiar. We become desensitised to our experience, which means that we process less information, and time seems to speed up.
Researchers who have studied the interaction between Earth and the Moon believe that approximately 1.4 billion years ago, a day on Earth was just 18 hours long. At current rates of movement, they believe days on Earth are getting longer by about 0.000018 seconds each year.
After all, the shortest day of the year, in terms of daylight, is December 21, the winter solstice. But the days will actually begin to feel a bit longer two weeks before the solstice. That's because the earliest sunset of the year happens before the solstice, and in 2022, it occurs on Wednesday, December 7.
Summer solstice in Iceland
Iceland's longest day of the year (the summer solstice) is around June 21. On that day in Reykjavik, the sun sets just after midnight and rises again right before 3 a.m., with the sky never going completely dark.
Winter solstice, the day in December (Northern Hemisphere) and June (Southern Hemisphere) with the longest night of the year.
What if the Moon hit Earth?
In the end, if the moon actually struck the planet, it would be an extinction like the world has never seen. The asteroid which killed the dinosaurs, along with three quarters of all the life on Earth, was only about 12 kilometers in diameter.
What would happen if the Moon crashed into Earth? Everything on Earth would die. The only way to survive this collision would be to leave Earth. The Moon and Earth would both be destroyed; the Earth would probably be split into numerous smaller pieces.
Unless a rogue object passes through our Solar System and ejects the Earth, this inspiral will continue, eventually leading the Earth to fall into our Sun's stellar corpse when the Universe is some ten quadrillion times its current age.
1.7 billion years ago the day was 21 hours long and the eukaryotic cells emerged. The multicellular life began when the day lasted 23 hours, 1.2 billion years ago. The first human ancestors arose 4 million years ago, when the day was already very close to 24 hours long.
The earth is made up of three different layers: the crust, the mantle and the core. This is the outside layer of the earth and is made of solid rock, mostly basalt and granite. There are two types of crust; oceanic and continental. Oceanic crust is denser and thinner and mainly composed of basalt.