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Vor 4 Tagen · Over the centuries, improvements in astronomical observations and theories of motion and gravitation led to ever more accurate descriptions of the universe. The modern era of cosmology began with Albert Einstein 's 1915 general theory of relativity , which made it possible to quantitatively predict the origin, evolution, and conclusion of the ...
- 13.787 ± 0.020 billion years
- At least 10⁵³ kg
- 9.9×10−27 kg/m³
Vor 2 Tagen · It has been a central subject for astronomical research since antiquity. The Sun orbits the Galactic Center at a distance of 24,000 to 28,000 light-years. From Earth, it is 1 AU (1.496 × 10 8 km) or about 8 light-minutes away. Its diameter is about 1,391,400 km (864,600 mi; 4.64 LS), 109 times that of Earth.
Vor 2 Tagen · Historically, Venus has been a common and important object for humans, in both their cultures and astronomy. Orbiting inferiorly (inside of Earth's orbit), it always appears close to the Sun in Earth's sky, as either a "morning star" or an "evening star".
- 35.02 km/s
- −243.0226 d (retrograde)
- 6.52 km/h (1.81 m/s)
Vor 2 Tagen · A black hole is a region of spacetime where gravity is so strong that nothing, including light and other electromagnetic waves, is capable of possessing enough energy to escape it. [2] Einstein 's theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.
Vor 4 Tagen · Diskutieren Sie diesen Artikel im Forum. astronews.com vor 10 Jahren. Die ESA-Sonde Venus Express soll tiefer in die dichte Atmosphäre der Venus eintauchen als jemals zuvor. (19. Mai 2014) Jahresrückblick 2023. Unser traditioneller Rückblick auf die Ereignisse aus Astronomie und Raumfahrt im gerade zu Ende gegangenen Jahr.
Vor 5 Tagen · The following is a list of astronomers, astrophysicists and other notable people who have made contributions to the field of astronomy. They may have won major prizes or awards, developed or invented widely used techniques or technologies within astronomy, or are directors of major observatories or heads of space-based telescope ...
Vor 5 Tagen · The chronology of the universe describes the history and future of the universe according to Big Bang cosmology. Research published in 2015 estimates the earliest stages of the universe's existence as taking place 13.8 billion years ago, with an uncertainty of around 21 million years at the 68% confidence level.
