All Entries in the "Cosmo Basics" Category
Why We Explore
Human Space Exploration Humanity’s interest in the heavens has been universal and enduring. Humans are driven to explore the unknown, discover new worlds, push the boundaries of our scientific and technical limits, and then push further. The intangible desire to explore and challenge the boundaries of what we know and where we have been has [...]
How old is the Earth?
Scientist do not know the exact age of the earth because all of its oldest rocks have been destroyed by plate tectonics. They estimate the earth is 4.3 – 4.54 Ga ( Ga= gigaannum = billion years ago) But, many religious people say that the earth is only about 6,000 to 44,000 years old. Who [...]
What is a weather balloon?
A weather balloon is a scientific instrument which is used to collect data about atmospheric weather conditions. Some people also call weather balloons “sounding balloons,” because they take soundings of the atmosphere. This data is used in weather prediction, and to track general weather trends. Numerous agencies all over the world release weather balloons [...]
What does an astronomer do and study?
In general, astronomers seek an understanding of how the Universe works; from the planets in our own Solar System, to the evolution of stars and nebulae, to whole systems of galaxies, to the properties and fate of the Universe as a whole. Modern astronomy relies upon fields such as physics, chemistry, computer science, and mathematics. [...]
What is a comet made of?
Find out why scientists often refer to comets as “dirty snowballs”.
