Our Planet
2019
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Perhaps unsurprisingly, our universe has just the right mass–energy density, equivalent to about 5 protons per cubic metre, which has allowed it to expand for the last 13.8 billion years, giving time to form the universe as observed today.
What is ViewSpace? ViewSpace is a free, web-based collection of digital interactives and videos highlighting the latest developments in astronomy and Earth science. ViewSpace gives you the opportunity to explore our planet, solar system, galaxy, and universe.
The universe is nearly 14 billion years old, our solar system is 4.6 billion years old, life on Earth has existed for maybe 3.8 billion years, and humans have been around for only a few hundred thousand years. In other words, the universe has existed roughly 56,000 times longer than our species has.
The origin, evolution, and nature of the universe have fascinated and confounded humankind for centuries. New ideas and major discoveries made during the 20th century transformed cosmology – the term for the way we conceptualize and study the universe – although much remains unknown.
Jun 2, 2023 · By allowing scientists to study the origins of the universe, the earliest galaxies and the mysterious, repulsive force known as dark energy, Hubble is helping to answer age-old questions such as Where did we come from? and How will the universe end? What Is the Big Bang?
May 27, 2024 · universe, the whole cosmic system of matter and energy of which Earth, and therefore the human race, is a part. Humanity has traveled a long road since societies imagined Earth, the Sun, and the Moon as the main objects of creation, with the rest of the universe being formed almost as an afterthought.
Jul 12, 2022 · NASA explores the unknown in space for the benefit of all, and Webb’s first observations tell the story of the hidden universe through every phase of cosmic history – from neighboring planets outside our solar system, known as exoplanets, to the most distant observable galaxies in the early universe.
Discover the universe: Learn about the history of the cosmos, what it's made of, and so much more.
Sep 30, 2021 · Get a look into the science and engineering behind the largest and most powerful space telescope ever built while exploring ways to engage learners in the mission. NASA is launching the largest, most powerful space telescope ever.
Jan 8, 2014 · Jan. 8, 2014. This illustration summarizes the almost 14-billion-year-long history of our universe. It shows the main events that occurred between the initial phase of the cosmos -- where its properties were almost uniform and punctuated only by tiny fluctuations -- to the rich variety of cosmic structure that we observe today, ranging from ...
