The wavelength will increase as the universe continues to expand.
The simplest answer to the question is to refer to the propagation conditions in a vacuum, where the direction in which the light is traveling doesn't matter and there are are no other effects to confuse the picture ... just the light and the empty space with its intrinsic electrical properties. There, neither the color of the light, nor its wavelength, frequency, or intensity, makes any difference in its speed. A flash of red, a flash of violet, a pulse of radio waves, and a zap of X-rays -- all emitted at the same time from the same star a million billion miles away from us -- will all arrive on Earth together 170 years later, having traveled together all at the same speed.
A gigasecond is equivalent to 1,000,000,000 (one billion) seconds, which is about 31.7 years.
The half-life of potassium-40 is 1.25 billion years since half of the original sample decays in that time. With 50 atoms initially, having 25 atoms remaining after 1.25 billion years aligns with the expected decay pattern for a half-life.
The universe is estimated to be around 13.8 billion years old in 2023.
The Sun is estimated, based on its size and energy production, to be about 5 billion years old."The Solar System", Roman Smoluchowski, Scientific American Library, 1983, page 6
Yes, in a few billion years.
No. In about 5 billion years the sun will expand and will likely consume Earth.
Landforms change.
our sun will live for another 4.5 billion years
most likely, the end of the sun would be because of its age. it only has about 4 billion years left. A star's lifetime is about 15-20 billion years.
It is likely the Earth will end in about 7.59 billion years from now. Citation: Wikipedia
A billion years equals a billion years. 1,000,000,000 years
It is impossible to tell what humans will look like in a billion years, if any humans are even alive then. We could change drastically, or not at all.
about 3 billion years after the Big Bang
a white dwarf
The observable Universe has a radius of about 46 billion light-years; that would be a diameter of 92 billion light-years. The entire Universe is likely much bigger, but it isn't know how much bigger.
A billion years from now