The European Space Agency has a satellite orbiting a comet, and NASA is planning a mission to an asteroid. I often get asked, What is the difference between a comet and an asteroid?
If you found Orion on the few clear nights we’ve had this month, then finding its neighbor, the constellation Taurus, will be easy.
The winter solstice — the beginning of winter in the northern hemisphere — occurred last Sunday at 2:57 p.m. local time. This is good news and bad news for astronomers.
You may have noticed the days are getting shorter and the nights are getting longer. You may have also noticed the sun appears to be moving south, getting closer to the southern horizon each day.
The European Space Agency is about to pull off a first — landing a spacecraft on the nucleus of a comet.
In the past few weeks I’ve been asked several questions about the northern lights, also called the aurora borealis. In this month’s column I will answer some of these questions and introduce you to this mysterious and unpredictable display of light in the night sky.
When you see images and hear reports from NASA missions, do you ever wish that you could be part of the team? If so, your wish may be coming true.
If you missed the supermoon on July 12, you’ll get second and third chances to see one on Aug. 10 and Sept. 9.
All objects in the sky appear to rise in the east and set in the west. The stars are not really moving; it is the rotation of the Earth from west to east that causes this apparent clockwise motion. The speed of this rotation is so constant that it can be used to keep time.
As summer approaches, the nights will be getting clearer and we will have better chances to view the stars. This is a good time to learn some of the stellar constellations.
The distances between the Earth and the stars are so great that the positions of the stars, relative to each other, will not significantly change in your lifetime.
The first total eclipse of the moon visible in North America since 2011 will occur April 14.
The Earth has four seasons—spring, summer, fall, and winter. Do other planets in the solar system have seasons? Before answering that question, let’s review what causes the Earth’s seasons.
This spring will bring us the best view of Mars in seven years.
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