undergradly.
Major · Physical Sciences

Mapping the universe from telescope time to data pipeline

Astronomy is the study of celestial objects and the physical laws that govern them — stars, galaxies, planetary systems, and the structure of the cosmos itself. About 545 degrees are awarded each year across 103 colleges, making it one of the smallest physical-science majors. The bachelor’s degree is most often a launchpad toward a PhD or a quantitative pivot, not a direct ticket to an astronomer job.

Schools offering
103
Annual completions
545
Typical degree level
Associate's + Bachelor's
Median earnings (5yr)
$74k

About this major

Astronomy as an undergraduate major focuses on the planetary, galactic, and stellar phenomena that occur in outer space — celestial mechanics, cosmology, stellar physics, galactic evolution, the interstellar medium, and the optical, radio, and theoretical methodologies used to study them. Coursework combines a heavy physics core (mechanics, electromagnetism, quantum mechanics, thermodynamics) with mathematics (calculus, differential equations, linear algebra) and astronomy-specific subjects like stellar dynamics, observational techniques, spectroscopy, and computational simulation. Independent research with a faculty member, telescope time at an institutional observatory, or a summer position at a national facility is what separates a strong applicant for graduate school from a competent one.

The major rewards students who like sitting with hard quantitative problems and who find satisfaction in the slow, careful work of extracting signal from noisy data. Comfort with programming matters more every year — survey instruments like LSST, Euclid, JWST, and the Roman Space Telescope are producing datasets that require pipeline engineering and machine-learning techniques to handle. Strong candidates often come from a mix of physics, mathematics, and computational backgrounds, with the curiosity to keep going when the answer to a research question takes months rather than minutes.

The scale of the field is small by undergraduate standards. About 545 students complete an astronomy degree each year across 103 colleges, with the largest programs at the University of Colorado Boulder (62), the University of Washington-Seattle (41), and Penn State Main (33). The five-year bachelor’s median earnings sit at $74,096 — a figure that reflects a mix of graduates who continue to PhD programs, pivot into tech and data analysis, and take research-adjacent technical roles. Named career destinations in the data include astronomers ($132,170 median, doctoral degree typical) and natural sciences managers ($161,180 median, mid-career), both of which sit beyond the bachelor’s alone.

Section 3 · Careers

Where this major leads

Occupations most often associated with this major, from the federal BLS+O*NET crosswalk. Job-growth projections and median wages are national.

Occupation Median wage Job growth Typical education
Natural sciences managers $161k +3.7% Bachelor's degree
Atmospheric, earth, marine, and space sciences teachers, postsecondary $101k +2.6% Doctoral or professional degree
Astronomers $132k +2.2% Doctoral or professional degree
Section 4 · Earnings

Earnings at a glance

Median graduate earnings from the federal College Scorecard, 5 and 10 years out.

Median 5-year earnings

$74k

Who this major is for

You may thrive here if you find yourself reading about gravitational waves or exoplanet atmospheres for the pleasure of it, you’re comfortable with the long mathematical apparatus that physics demands, you enjoy programming as a tool for working through real datasets, you’re open to the five-to-seven year PhD timeline that the astronomer occupation requires, and you can tolerate research that produces partial answers and dead ends as much as clean results. The major also fits students who want a quantitative bachelor’s with optionality — strong undergraduate astronomy programs at places like CU Boulder, Washington-Seattle, and UT Austin produce graduates who continue to physics and astronomy PhDs, but also feed into data science, scientific computing, and quantitative finance roles where the analytical training translates directly.

Think twice if you want a bachelor’s that leads straight to a high-earning astronomy job — the astronomer occupation requires a doctorate and the typical bachelor’s-only path lands in observatory technician, science educator, or general data-analyst roles around $50,000 to $90,000. Reconsider the major if mathematics and physics are tools you tolerate rather than enjoy; the curriculum’s second and third years lean hard on quantum mechanics, statistical physics, and computational methods. The small program scale also means fewer cohort peers and less internal community than larger physical-science majors, which can matter for students who learn best in active study groups. And if your real interest is the spacecraft and instrumentation side rather than the science questions, aerospace or engineering physics is likely a better undergraduate match.

Section 6 · Where to study

Top colleges for Astronomy

Ranked by annual completions at the associate's or bachelor's level — a proxy for program scale.

College Location Assoc. Bach. Total
University of Colorado Boulder Boulder, CO 0 62 62
University of Washington-Seattle Campus Seattle, WA 0 41 41
Pennsylvania State University-Main Campus University Park, PA 0 33 33
The University of Texas at Austin Austin, TX 0 27 27
University of Chicago Chicago, IL 0 24 24
University of Florida Gainesville, FL 0 22 22
University of Arizona Tucson, AZ 0 21 21
Ohio State University-Main Campus Columbus, OH 0 20 20
University of Michigan-Ann Arbor Ann Arbor, MI 0 18 18
University of Virginia-Main Campus Charlottesville, VA 0 18 18
Section 7 · Explore sideways

Related majors to explore

Geology/Earth Science, General

3,815 completions/yr

Geological and Earth Sciences/Geosciences, Other

564 completions/yr

Atmospheric Sciences and Meteorology, General

530 completions/yr

Astrophysics

340 completions/yr

Oceanography, Chemical and Physical

239 completions/yr

Meteorology

216 completions/yr

Astronomy and Astrophysics, Other

87 completions/yr

Environmental Geosciences

84 completions/yr
Section 9 · Frequently asked

Common questions

What do Astronomy majors actually study day-to-day?
Coursework leans heavily on physics and mathematics — classical mechanics, electromagnetism, quantum mechanics, statistical physics, and the calculus and differential equations that support them. On the astronomy side, you move through stellar physics, galactic dynamics, cosmology, and the interstellar medium, with observational techniques like CCD imaging, spectroscopy, and photometry layered on top. Computational work is increasingly central; many programs require Python, data-reduction pipelines, and simulation projects. Independent research with a faculty member or observatory time often makes the difference between a generic transcript and one competitive for graduate admissions.
What do Astronomy graduates actually do for work after a bachelor’s?
The career data lists three closely linked occupations: astronomers ($132,170 median), atmospheric, earth, marine, and space sciences professors ($101,390), and natural sciences managers ($161,180). Two of those require a doctorate, and the third is a mid-career outcome reached after years of research experience. Bachelor’s-only graduates more commonly move into adjacent roles — observatory technicians, data analysts, scientific programmers, planetarium and museum educators, or K-12 teaching with a certification. A meaningful share continue directly into PhD programs, where the real career mathematics of this major plays out.
Do I need a PhD to make this major pay off?
For the named astronomy careers, yes — both astronomers and astronomy professors list a doctoral or professional degree as the typical entry credential. Without that step, the bachelor’s opens analytically demanding work but not the astronomer title itself. The honest economic case for the bachelor’s rests on the optionality the training creates: graduates who pivot into software engineering, scientific computing, or quantitative finance can match or exceed the astronomer median wage without the PhD timeline. That pivot is real but typically demands supplementing the curriculum with computer-science coursework or self-taught engineering skills.
How does Astronomy differ from Astrophysics or Physics?
The CIP system treats them as separate codes within the same family: Astronomy is 40.0201, Astrophysics is 40.0202, and Physics, General is 40.0801. In practice the distinctions are program-specific rather than universal — many departments offer a single track and label it either way. Astronomy programs typically weight observational techniques and survey science more heavily; astrophysics programs lean toward theory, modeling, and the high-energy regime. Physics, General is broader and more flexible, while Astronomy and Astrophysics, Other (40.0299) and Planetary Astronomy (40.0203) appear in the data as smaller specialty codes. If your school offers more than one option, look at the actual course catalog rather than the title.
Where do students actually study this major?
The 545 annual completions spread thinly across 103 colleges, averaging roughly five graduates per program. The largest cohorts in the data are at the University of Colorado Boulder (62 bachelor’s), the University of Washington-Seattle (41), Penn State Main (33), the University of Texas at Austin (27), and the University of Chicago (24). Public flagships dominate the list because they tend to host research observatories or partnerships with national facilities. The major is offered at the bachelor’s and associate’s level, but associate’s pathways are rare in the data and most students either start at a four-year program or transfer in via a physics track.
What if I love astronomy but want a stronger bachelor’s-level career path?
A few honest options. Engineering Physics or Aerospace Engineering keeps the physics depth while improving direct-to-career earnings. Computer Science with an astronomy or physics minor positions you for the same data-pipeline and machine-learning roles that observatories and tech companies hire for, but with stronger software credentials. Atmospheric Sciences and Meteorology (530 completions) shares the same SOC-coded postsecondary teaching pathway and connects to a more accessible bachelor’s job market. If the love is specifically for observational research, the bachelor’s in astronomy still serves that goal — just go in clear-eyed about the PhD step.