As of June 2023, there are 290 confirmed moons in our solar system. A moon, also known as a natural satellite, is a celestial body that orbits planets, and asteroids. This number includes only the planetary moons (moons orbiting a planet) plus Pluto’s moons. Here is the list of the known planetary moons in the solar system.
From 1980 to 1989, the National Aeronautics and Space Administration (NASA) experienced one of its most eventful and transformative decades. During these years, NASA’s budget reflected the agency’s evolving priorities and the challenges it faced. This era was defined by significant milestones, including the launch and regular missions of the Space Shuttle program, which revolutionized space transportation. However, it was also marked by the tragic Challenger disaster in 1986. Through highs and lows, NASA’s funding patterns during this decade provide insights into the U.S. government’s commitment to space exploration and its response to unforeseen events. This article will detail the year-by-year budget of NASA throughout the 1980s, juxtaposed against the backdrop of its achievements and challenges.
Picture this: observing the solar system’s planets from a vantage point 384,400 kilometers (238,855 miles) away – the same distance that separates the Earth and the Moon. At this unique distance, the planets transform into a fascinating celestial display. Jupiter’s grandeur is more pronounced, its bands and moons visibly distinct. Saturn’s majestic rings, while subtler, still catch the eye with their delicate glow. This perspective not only alters their appearance but also enhances our appreciation for the vast scale and beauty of our solar system.
Amidst the vast, frigid expanse of space, Earth shines as a unique cradle of life. This blue gem has harbored life for over 3.5 billion years and, barring unforeseen catastrophes, promises to continue for billions more. But, what makes life on earth possible? Explore the 10 key elements that make our planet a haven for life.
The phases of the Moon are determined by the changing angles of the Sun, Moon, and Earth, not by the Earth’s shadow, which only causes lunar eclipses. Like the Earth, the moon is only half-lit by the Sun at any time. We see it from different angles at different times, that’s how moon phases occur.
Our home planet is a complex and wondrous place, brimming with mysteries and surprises. Yet, in the vast expanse of knowledge we hold about Earth, some misconceptions have taken root. These widely held but incorrect beliefs often stem from outdated textbooks, misunderstood science, or the oversimplification of complex concepts for ease of learning. They range from ideas about the shape of the Earth and the causes of the seasons to beliefs about the composition of the atmosphere and the workings of Earth’s ecosystems.
Dispelling these misconceptions is not just about correcting facts; it’s about deepening our understanding of the world around us and fostering a more informed appreciation of our place within it. Here are the top ten misconceptions about Earth.
On October 20, 2014, astronomers Pedro Bernardinelli and Gary Bernstein discovered the largest comet ever known using archival images from the Dark Energy Survey [see notes 1]. Comet Bernardinelli-Bernstein’s estimated diameter is approximately 85 miles (136.7 km) across, making it larger than the state of Rhode Island. According to NASA, its nucleus is about 50 times larger than that found at the heart of most known comets. [Source] Its mass is estimated to be a staggering 500 trillion tons – about 100,000 times greater than the mass of a typical comet found much closer to the Sun.
In his video titled “Why Exomoons Are So Important,” astrophysicist David Kipping passionately elucidates five compelling reasons behind the significance of exploring exomoons. With a career-long dedication to the subject, Kipping artfully dissects the role of exomoons in shaping our understanding of the cosmos. Delving into themes like habitability, the Rare Earth hypothesis, moon formation, and the quest for biosignatures, he underscores their profound impact on our perception of exoplanets and their potential to harbor life. Through lucid explanations and vivid analogies, Kipping invites us to recognize exomoons as more than mere satellite companions; they represent a new frontier of astronomical exploration that could revolutionize our comprehension of the universe.
Elizabeth Langdon Williams, born in 1879 in Putnam, Connecticut, was more than just an early female graduate of the Massachusetts Institute of Technology (MIT). She played a crucial role in the quest to discover Planet X, now known as Pluto. In an era before the dawn of electronic computers, Elizabeth was a leading figure among “human computers” – skilled individuals, often women, who manually performed intricate calculations. Williams’ unmatched mathematical acumen guided teams in their celestial searches, laying foundational work for the eventual identification of Pluto in 1930. As we marvel at today’s advanced machines, it’s essential to remember pioneers like Williams, who blended intellect and precision at a time when the human mind was the most powerful computing resource.
Moonlit nights have often been the backdrop for tales of mystery and wonder, especially if there’s a full moon. Whether through superstitions or folklore, the moon has been the muse for countless narratives of supernatural occurrences and strange behaviors. But how much of what we’ve heard is truth, and how much is a mere myth? Diving into the world of lunar phenomena, this article will explore eight myths and facts about the moon’s influence on our lives, its effects on animals, and its intricate relationship with our planet. From our sleeping patterns to the glow of scorpions, join us on a journey that separates lunar fact from fiction.