There are this many main branches of Science
3
George Washington Carver invented hundreds of products involving several agricultural products like sweet potatoes and soybeans, and also promoted crop rotation, which increased crop output. But he is most famous with his work and inventions involving this product that grows in the ground

Peanuts
A UFO, or an ______________ flying object, is just any object that flies that we haven't been able to figure out the identity of
Unidentified
Charles Darwin collected and studied these objects found in the ground that helped him understand how species had changed over time
Fossils
This is the fundamental unit of all life
the cell
Biology is an example of this main type of Science
(Double the points if you can name another example besides Biology!)
Life Science
Katherine Johnson was a mathematician who helped do something called trajectory analysis, which means studying how different objects travel through space. She became highly sought after during the Space Race for her skilled math work for this government agency

NASA
This is a common three-word phrase used as code for "aliens" (although there's no evidence for this). A clue is found in the image below, which first appeared in a comic in the year 1951:

"little green men"
The Earth is between these two planets in the Solar System
Venus and Mars
Instead of being based on the Sun like our modern calendar, the traditional Chinese calendar is based on this celestial object
The Moon
Name an example of an Earth Science
[Geology
Oceanography
Seismology
Volcanology
Geography
Meteorology
Climatology]...
Neil DeGrasse Tyson is an astronomer and astrophysicist who has broken down complicated astronomy and physics concepts for the public. Among other things, he explains the concept of Spacetime, which looks at the ____ dimensions of space and time

4
Other alien life forms haven't been found yet, but scientists wonder if they could be silicon-based or even some other element.
But they could also be like us, based on this element
Carbon
(carbon-based)
April 22 was designated by the UN as "Earth Day" which highlights things people can do for this (another name for Mother Earth)
(Or, name the modern day movement)
The Environment
(Environmentalism)
Just like the Western zodiac, the Chinese zodiac has this many divisions, but it changes by the year, not the month
12
Chemistry is an example of this main branch of Science
Physical Science
Daniel Hale Williams (1856 - 1931) was the first doctor to perform an open heart surgery on the pericardium, which is the thin sac which encases the heart. Doctors who specialize in working on the heart study this branch of medicine

Cardiology
(Cardiologist)
👽 👾 🛸 👾 👽 👽 👾 🛸 👽 👽 👾 🌃 🔭
This long word meaning "alien life form" contains word roots meaning "beyond earth"... but don't phone home, we haven't discovered any yet
Extra-terrestrial
This word starting with an "H" is a place where a living thing tends to live, it's "natural" home
Habitat
In addition to having a cell membrane like all cells, plants, fungi, and bacteria usually have this additional layer for protection
Cell wall
The branches of Science are:
*Physical Science
*Earth Science
*Life Science
Dr. Marie Maynard Daly, with a PhD in Chemistry, was the first scientist to understand the link between hypertension / cholesterol and a disease called atherosclerosis, which is a buildup of plaque in these vessels which allow blood to travel out to the rest of the body from the heart.

Arteries
The Drake Equation, which looks like:
tries to provide a way to quantify the number of
Alien civilizations in this galaxy
the Milky Way
This root for the word "Earth" or "world" used in scientific words comes from the Greek word 'Gaia' originally meaning 'Earth goddess'
Geo-
(Geography. Geology. etc)
Plants have two different energy factories: one is this "solar power plant" and the other one makes energy for the plant also. Name them both
Chloroplast and Mitochondrion