2020年9月29日 · One astronomical unit is 149,598,000 km / 92,955,887 miles, and in our top shape, we could reach it in 25 days. Now, the Universe is 93 billion light-years across, and one, just one light-year, is equivalent to 63,000 astronomical units.

Outer space does not begin at a definite altitude above Earth's surface. The Kármán line, an altitude of 100 km (62 mi) above sea level, [9] [10] is conventionally used as the start of outer space in space treaties and for aerospace records keeping.

2022年1月28日 · How big is the universe? Based on what we can observe, the universe appears to be almost 28 billion light-years across. However, it is far larger than that.

How Big is the Universe? The actual spatial size of the universe is unknown. However, by measuring the observable universe, the current size of the universe is approximately 95 billion light-years in diameter.

2023年9月26日 · Assume that the distance between Earth and the Sun, known as 1 astronomical unit, is 1 centimeter instead of its actual 93 million miles. In all of human history, mind you, we have...

In this article, I will try to give you an idea of how big the universe is and explore the space around it. The observable universe is estimated to be about 92 billion light-years across. The universe’s size and vastness are impossible to know for sure with our current technology.

2024年3月8日 · On average across its orbital path, it’s about 380,000 km from Earth. That’s already a pretty long way; nearly 30 Earths could fit side by side over that distance! Or think of it this...

They concluded that the Universe is at least 250 times larger than the observable universe, or 7 trillion light-years across. But, ultimately, science has no reliable estimate of the actual size of …

2019年8月31日 · Luckily, scientists know just how far it's moved: 46.5 billion light-years away, based on calculations of universe’s expansion since the big bang.

2024年3月21日 · How big is outer space? The observable universe – the part we can visibly see and measure – is estimated to be about 46.5 billion light-years in any direction from the Earth. If we imagine it as a sphere surrounding our planet, its diameter will be around 93 billion light-years.