How long it will take to reach sun?
At this speed, how many days would it take to travel to the sun from Earth, located at a distance of 149 million kilometers? Answer: Time = Distance/speed so Time = 149,000,000 km/ 28,000 = 5321 hours or 222 days.
NASA research scientist Eric Christian has said that it might someday be possible to design a vessel that could safely take human astronauts within 4 million miles (6.4 million kilometers) of the sun. But before we can even think about such a high-risk mission, we'll need to see how the Parker Solar Probe fares.
In theory, we could. But the trip is long — the sun is 93 million miles (about 150 million kilometers) away — and we don't have the technology to safely get astronauts to the sun and back yet. And if we did, it'd be pretty hot.
The Sun is becoming increasingly hotter (or more luminous) with time. However, the rate of change is so slight we won't notice anything even over many millennia, let alone a single human lifetime. Eventually, however, the Sun will become so luminous that it will render Earth inhospitable to life.
The temperature at the surface is nearly 6,000 degrees Centigrade. The gases move at thousands of miles an hour. You can't stand on the surface of the Sun even if you could protect yourself. The Sun is a huge ball of heated gas with no solid surface.
No person has ever walked on the sun. Other than the fact a human would disintegrate if they got near it - it is, as all stars are, a hot ball of gas made up mostly of Hydrogen, and is not solid.
Warmth: not too much and not too little
And we get the amount of warmth needed for humans, animals and plants to live. If the sun would go out, no life could survive on most of earth's surface within a few weeks. Water and air would freeze over into sheets of ice.
The previous record, 42.73 million kilometres (26.55 million miles) from the Sun's surface, was set by the Helios 2 spacecraft in April 1976. As of its perihelion 21 November 2021, the Parker Solar Probe's closest approach is 8.5 million kilometres (5.3 million miles).
Has anything Reached sun?
The Parker Solar Probe's mission is to study the sun in unprecedented detail. The revolutionary solar probe became the first spacecraft to "touch" the sun when it swooped inside the sun's outer atmosphere, or corona, during its eighth flyby on April 28, 2021, according to a statement from NASA (opens in new tab).
In short, the sun is getting farther away from Earth over time. On average, Earth is about 93 million miles (150 million kilometers) from the sun, according to NASA (opens in new tab). However, its orbit is not perfectly circular; it's slightly elliptical, or oval-shaped.
A few days ago NASA spacecraft, the Parker Probe, made history! The National Aeronautics and Space Administration (NASA)'s Parker Solar Probe touched the Sun. The Parker Probe entered the Sun's upper atmosphere known as the corona where the temperature intensity is up to 2 million-degree Fahrenheit.
A star's habitable zone, or the region around the star where temperatures are warm enough for a planet's surface to sustain liquid water, depends on the star's temperature and brightness. As a red giant, our Sun will expand and heat up, forcing its current habitable zone, which now encompasses Earth, outward.
It is the pull of the Moon's gravity on the Earth that holds our planet in place. Without the Moon stabilising our tilt, it is possible that the Earth's tilt could vary wildly. It would move from no tilt (which means no seasons) to a large tilt (which means extreme weather and even ice ages).
Even blue pigments and blue gems and rocks were rare in antiquity. People back then didn't need as many adjectives for color as modern times because there was nothing in their life in a hue beyond what they used. Blue didn't appear in Chinese stories, the Icelandic Sagas, or ancient Hebrew versions of the Bible.
Highlights. Earth's temperature has risen by 0.14° Fahrenheit (0.08° Celsius) per decade since 1880, but the rate of warming since 1981 is more than twice that: 0.32° F (0.18° C) per decade. 2021 was the sixth-warmest year on record based on NOAA's temperature data.
If the Sun was more like a red dwarf, it could last much longer. In order to save the Sun, to help it last longer than the 5 billion years it has remaining, we would need some way to stir up the Sun with a gigantic mixing spoon. To get that unburned hydrogen from the radiative and convective zones down into the core.
Earth could continue to host life for at least another 1.75 billion years, as long as nuclear holocaust, an errant asteroid or some other disaster doesn't intervene, a new study calculates. But even without such dramatic doomsday scenarios, astronomical forces will eventually render the planet uninhabitable.
"This reveals the star's core, which by this point in the star's life is running out of fuel, eventually turning off and before finally dying." Astronomers estimate that the sun has about 7 billion to 8 billion years left before it sputters out and dies. One way or another, humanity may well be long gone by then.
Is Earth or Sun older?
The sun, at 4.6 billion years old, predates all the other bodies in our solar system.
Bottom line: The Holocene epoch, in which we currently live, has been divided into three new geological ages—the Greenlandian, Northgrippian, and Meghalayan. The most recent age, the Meghalayan, began 4,200 years ago during a worldwide megadrought.
The color of the sun is white. The sun emits all colors of the rainbow more or less evenly and in physics, we call this combination "white". That is why we can see so many different colors in the natural world under the illumination of sunlight.
Earth is estimated to be 4.54 billion years old, plus or minus about 50 million years. Scientists have scoured the Earth searching for the oldest rocks to radiometrically date.
The Sun is a huge ball of hydrogen and helium held together by its own gravity. The Sun has several regions. The interior regions include the core, the radiative zone, and the convection zone.